Antioch heating & air services
A new heating system should fit the home’s heat loss and existing distribution system. In Demand Plumbing, Heating & Air provides heating installation services in Antioch.
Serving homeowners across the East Bay with furnace and heating system installation and replacement tailored to your home.
Local service information
We assess heating capacity, fuel or electrical requirements, and equipment placement before installation. Across Antioch, from Country Hills to other residential areas, home layouts and existing systems vary; an on-site evaluation guides the recommendation. The best option depends on the building and how the household uses its heating system. We serve homeowners in Rivertown, Hillcrest, and other Antioch neighborhoods, with service focused on the actual plumbing or HVAC issue.
Rivertown, Hillcrest, and Somersville are local residential areas or corridors in Antioch. Antioch has older residential streets near Rivertown as well as later subdivisions along the Lone Tree and Deer Valley corridors.
Heating installation planning considers sizing, distribution, and existing utilities. For appointments near Rivertown and Hillcrest, access and existing system condition help determine the appropriate next steps.
When to get help
Our approach
We review the current installation and the needs of the home. Equipment selection considers compatibility, available energy supply and the supporting installation work. We discuss the proposed system and scope, including any changes identified during the assessment. The project is planned around the property rather than a single equipment specification.
Describe the issue and any previous work when arranging your appointment. We explain the findings and proposed scope so you can make an informed decision.
See our work
Real work from In Demand Plumbing, Heating & Air. Explore actual repairs, installations and other completed projects from our service areas.
Antioch, CA · Local project
The In Demand Plumbing, Heating & Air team participates in hands-on HVAC training to strengthen technician skills in heating and air conditioning diagnostics, equipment servicing, and repair techniques. As furnace tune-up and repair season approaches, our technicians continue sharpening their skills
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Brentwood, CA · Completed project
In Demand Plumbing, Heating & Air completed the installation of a Goodman 4\-ton variable\-speed communicating heat pump paired with a high\-efficiency gas furnace\. The system combines electric heating and cooling with gas heating for year\-round home comfort\.
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Pittsburg, CA · Completed project
In Demand Plumbing, Heating & Air installed a single-stage heat pump system with a matching indoor air handler and a whole-home air scrubber for year-round heating, cooling, and indoor air quality.
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Planning your new heating system
We review the current heating equipment, home requirements and installation conditions.
We discuss furnace, heat-pump and other suitable configurations along with compatibility requirements.
We explain the selected equipment and supporting installation work before the project is scheduled.
Products & Equipment
Discover how the right equipment can improve comfort, efficiency, and everyday life at home. We'll help you compare options suited to your property.
Lennox · MMLD — multi-zone outdoor unit product family. Exact model number must be selected based on system capacity and indoor-unit configuration.
Tired of rooms that are always too hot or too cold? Whether it's an upstairs bedroom that never cools down, a home office that needs extra comfort, or a house without traditional ductwork,…
Individual Room Temperature Control
Connects up to five compatible indoor zones to one outdoor unit, allowing homeowners to customize comfort in different areas.
High-Efficiency Heating and Cooling
Offers efficiency ratings up to 23.00 SEER2 and 10.50 HSPF2, depending on the matched system.
Cold-Climate Heat Pump Technology
Designed to maintain heating capacity in cold weather, with operation down to -13°F under specified conditions.
Tired of rooms that are always too hot or too cold? Whether it's an upstairs bedroom that never cools down, a home office that needs extra comfort, or a house without traditional ductwork, the Lennox MMLD Multi-Zone Ductless Mini-Split System offers a flexible way to heat and cool different areas of your home. Unlike conventional central HVAC systems that distribute conditioned air through ductwork, the Lennox MMLD connects one outdoor heat pump to multiple compatible indoor units. Each indoor unit serves a designated area, allowing you to set different temperatures for different rooms or zones. Its inverter-driven compressor adjusts operation as heating and cooling needs change, helping maintain consistent temperatures without repeatedly running at full capacity. The MMLD is an attractive option for older homes without existing ductwork, room additions, converted garages, and homeowners who want more personalized temperature control. Wall-mounted and other compatible indoor-unit styles may be available depending on the selected system. Because this is a heat pump, it provides both heating and cooling without requiring a separate gas furnace. However, all connected indoor zones operate within the system's available capacity and operating mode limitations. In Demand Plumbing, Heating & Air can evaluate your home's layout, calculate heating and cooling requirements, recommend appropriate indoor-unit locations, and professionally install a Lennox multi-zone system designed around your comfort needs.
Manufacturer Warranty: - 5-year limited warranty on covered components. - 7-year limited warranty on the compressor. These terms are published on the official Lennox MMLD product page. Coverage conditions, exclusions, registration requirements, and eligibility must be confirmed using the applicable warranty certificate.
Lennox · SL25KCV & SLP99VK
Exceptional Cooling. Precise Heating. Complete Home Comfort.
Variable-Capacity Cooling
The Lennox SL25KCV adjusts cooling output to maintain consistent indoor temperatures and reduce noticeable temperature swings.
Variable-Capacity Gas Heating
The Lennox SLP99VK adjusts heating output to provide consistent warmth without frequent full-power cycling.
Premium Energy Efficiency
High-efficiency cooling and gas heating can help reduce energy consumption compared with older, less efficient systems.
Exceptional Cooling. Precise Heating. Complete Home Comfort.
Experience premium year-round comfort with the Lennox Signature Gas Heating & Cooling System, featuring the SL25KCV variable-capacity air conditioner and a compatible Lennox Signature gas furnace.
Unlike conventional heating and cooling systems that operate primarily at full capacity, this advanced system is designed to adjust its output to your home's changing comfort needs.
The SL25KCV delivers high-efficiency cooling with quieter operation and more consistent indoor temperatures. Paired with a Lennox variable-capacity gas furnace, the system provides precise heating during cooler months and variable-speed airflow throughout the home.
Advanced communicating controls help coordinate equipment performance, while properly matched indoor components support improved humidity management and consistent comfort.
Why homeowners choose this system:
At In Demand Plumbing, Heating & Air, we design heating and cooling installations around the needs of your home, not simply the size of your existing equipment. Premium comfort in every season.
Lennox Signature Collection Manufacturer Limited Warranty The Lennox SL25KCV air conditioner and SLP99VK gas furnace offer manufacturer limited warranty coverage for qualifying residential installations. Eligible Lennox Signature equipment may include up to 10 years of limited coverage on specified components, subject to the applicable model warranty certificate. Additional coverage options may be available through Lennox Warranty Your Way, depending on equipment eligibility, installation date, and applicable terms. Warranty coverage for the air conditioner, furnace, evaporator coil, thermostat, and accessories may differ. All warranties are subject to Lennox's official terms, conditions, and exclusions. Manufacturer warranty coverage is separate from any installation or workmanship warranty provided by In Demand Plumbing, Heating & Air.
Lennox · SL22KLV
What if one heating and cooling system could keep your home comfortable year-round, operate quietly, and adjust automatically instead of constantly switching between full power and off? The…
Variable-Capacity Heating and Cooling
Adjusts compressor output in increments as small as 1% to help maintain consistent temperatures without unnecessary full-power operation.
Advanced Cold-Climate Performance
Uses Electronic Refrigerant Injection technology to support heating in outdoor temperatures as low as -20°F.
Up to 21.10 SEER2 Efficiency
Provides high-efficiency cooling that may reduce electricity consumption compared with older, less-efficient equipment.
What if one heating and cooling system could keep your home comfortable year-round, operate quietly, and adjust automatically instead of constantly switching between full power and off? The Lennox SL22KLV Cold Climate Heat Pump is designed to deliver precisely that kind of comfort. Part of the premium Dave Lennox Signature Collection, the SL22KLV provides both heating and air conditioning using electricity. During summer, it removes heat from your home. During cooler months, it transfers outdoor heat inside to provide warmth. Unlike traditional single-stage equipment, its variable-capacity compressor continuously adjusts output to match your home's needs. This helps maintain steadier indoor temperatures, reduce noticeable temperature swings, and support efficient operation. With cooling efficiency up to 21.10 SEER2 and heating efficiency up to 10.50 HSPF2, the SL22KLV is designed for homeowners who value comfort and energy efficiency. Its advanced cold-climate technology also supports heating operation in outdoor temperatures as low as -20°F. The system can be paired with compatible Lennox equipment for all-electric heating and cooling or configured with a gas furnace for dual-fuel operation. For homeowners replacing an aging air conditioner or furnace, the SL22KLV offers an opportunity to upgrade to a sophisticated, year-round comfort system. In Demand Plumbing, Heating & Air can evaluate your home's heating and cooling needs, recommend the appropriate equipment combination, and professionally install and configure your Lennox heat pump.
Manufacturer Warranty: - 10-year limited warranty on the compressor for qualifying residential installations. - 10-year limited warranty on other covered components for qualifying residential installations. - Lennox Warranty Your Way may provide additional options for eligible homeowners, subject to program terms. Warranty coverage is subject to the applicable certificate, registration or eligibility requirements, and exclusions. Labor is not automatically included in the standard parts warranty.
Lennox · SLP99V
Tired of uneven temperatures, noisy heating cycles, or a furnace that constantly turns on and off? The Lennox SLP99V Gas Furnace is designed to deliver quieter, more consistent warmth while…
Variable-Capacity Heating
Automatically adjusts heat output to better match your home's heating demand, reducing large temperature swings.
Up to 99% AFUE Efficiency
Converts nearly all the fuel's energy into usable heat under standardized testing conditions, potentially reducing gas consumption compared with older furnaces.
Variable-Speed Blower Motor
Adjusts airflow to help distribute heat evenly while supporting quieter operation.
Tired of uneven temperatures, noisy heating cycles, or a furnace that constantly turns on and off? The Lennox SLP99V Gas Furnace is designed to deliver quieter, more consistent warmth while using fuel efficiently. Part of the Dave Lennox Signature Collection, the SLP99V is a premium variable-capacity gas furnace with efficiency ratings up to 99% AFUE. That means up to 99% of the fuel's energy is converted into usable heat under standardized testing conditions, helping reduce wasted energy compared with many older, lower-efficiency furnaces. Unlike traditional single-stage furnaces that operate at full heating output whenever they turn on, the SLP99V can adjust its heat output in small increments to match your home's changing heating needs. Its variable-speed blower also adjusts airflow to help maintain more even temperatures and quieter operation. When paired with compatible Lennox communicating controls and cooling equipment, the furnace can support advanced comfort features, humidity management, and coordinated heating and cooling operation. The SLP99V is especially appealing for homeowners replacing an aging gas furnace who prioritize comfort, quiet performance, and long-term heating efficiency. Installation requirements, equipment compatibility, and the cost of upgrading should be considered before selecting this premium model. In Demand Plumbing, Heating & Air can evaluate your existing heating system, determine the proper furnace size, and professionally install and configure the Lennox SLP99V for your home's heating needs.
Lennox lists warranty coverage for eligible SLP99V furnaces under its Dave Lennox Signature Collection warranty program. - Covered components: Up to 10 years of parts coverage under the applicable warranty program. - Heat exchanger: 20-year or limited lifetime coverage, depending on the exact model and warranty terms. - Warranty Your Way: Eligible homeowners may choose the default 10-year parts-only coverage or an alternative combining 3 years of labor coverage with 7 years of parts coverage. Eligibility, registration, exclusions, and warranty selection conditions apply. Verify the exact warranty certificate for the installed furnace.
Lennox · iComfort S40
Imagine walking into a home that's already at your ideal temperature, without constantly adjusting the thermostat. The Lennox iComfort S40 Ultra Smart Programmable Thermostat makes managing…
7-Inch HD Color Touchscreen
Large, easy-to-read display makes adjusting temperatures, schedules, humidity settings, and comfort preferences simple.
Smart Away Technology
Uses smartphone location information to automatically adjust temperatures when household members leave or return.
Schedule IQ Technology
Adapts heating and cooling schedules to changing household routines for convenient comfort management.
Imagine walking into a home that's already at your ideal temperature, without constantly adjusting the thermostat. The Lennox iComfort S40 Ultra Smart Programmable Thermostat makes managing your home's heating and cooling easier with intelligent controls, personalized comfort settings, and convenient access from almost anywhere. Featuring a sleek color touchscreen, the iComfort S40 allows you to create heating and cooling schedules that fit your daily routine. Whether you're heading to work, returning home, or getting ready for bed, your thermostat can help maintain comfortable temperatures while reducing unnecessary system operation. What makes the iComfort S40 different from many conventional smart thermostats is its ability to communicate with compatible Lennox HVAC equipment. Instead of simply switching heating and cooling on or off, it can coordinate with supported variable-capacity and multi-stage systems for more precise temperature control. The thermostat also supports remote adjustments through the Lennox Home App, compatible voice assistants, and advanced indoor air quality management when paired with qualifying accessories. For homeowners upgrading to a compatible Lennox heating and cooling system, the iComfort S40 can serve as the central control for year-round comfort. In Demand Plumbing, Heating & Air can evaluate compatibility, professionally install the thermostat, configure its settings, and help you get the most from your Lennox comfort system.
Manufacturer Warranty: Lennox advertises a 10-year limited warranty for the S40 Smart Thermostat. Coverage is subject to the applicable Lennox warranty terms, including eligibility, exclusions, and any registration requirements. These conditions should be confirmed before publishing.
Lennox · PureAir S (product family). Exact cabinet model or catalog number must be confirmed for the selected installation.
Dust settling on your furniture, lingering cooking odors, and airborne allergens can make your home feel less comfortable, even when your heating and cooling system is working perfectly.…
MERV 16 High-Efficiency Filtration
Captures fine airborne particles that many standard residential HVAC filters allow to pass through.
Whole-Home Air Purification
Treats circulating air through the central heating and cooling system rather than relying on separate portable units in individual rooms.
Three-Part Air Treatment
Combines particle filtration, carbon-based odor control, and a UVA purification process to address multiple indoor air contaminants.
Dust settling on your furniture, lingering cooking odors, and airborne allergens can make your home feel less comfortable, even when your heating and cooling system is working perfectly. The Lennox PureAir S Whole-Home Air Purification System is designed to help address these everyday indoor air quality concerns throughout your home. Unlike portable air purifiers that clean the air in a single room, the PureAir S works with your home's central HVAC system to treat air as it circulates through the ductwork. Its MERV 16 filtration captures fine airborne particles, including dust, pollen, pet dander, and certain microscopic contaminants. The system also combines activated carbon filtration with a UVA-based purification process to help reduce household odors, chemical vapors, and ozone already present in indoor air. For added convenience, built-in sensors monitor filter and purification component usage, providing maintenance notifications through a compatible Lennox smart thermostat. The PureAir S is particularly appealing for homeowners looking for more comprehensive filtration than a standard HVAC filter provides. However, it requires compatible equipment, periodic replacement components, and sufficient airflow to operate properly. In Demand Plumbing, Heating & Air can evaluate your existing heating and cooling system, determine whether the PureAir S is a suitable upgrade, and professionally install and configure it for reliable whole-home air purification.
Manufacturer Warranty: Lennox lists a 10-year limited warranty on covered components for residential applications and a 1-year limited warranty on covered components for nonresidential applications. Registration requirements, exclusions, consumable component coverage, and other conditions require confirmation against the applicable warranty certificate.
Lennox
Wondering what's really in the air your family breathes every day? Dust, airborne particles, and invisible pollutants can affect indoor air quality without you even realizing it. The Lennox…
Real-Time Air Quality Monitoring
Continuously tracks indoor pollutants so homeowners can better understand changing air conditions.
Three Pollutant Measurements
Detects PM2.5 fine particles, carbon dioxide, and volatile organic compounds.
Automatic Air Cleaning Response
Works with compatible HVAC filtration, purification, and ventilation equipment to respond when air quality declines.
Wondering what's really in the air your family breathes every day? Dust, airborne particles, and invisible pollutants can affect indoor air quality without you even realizing it. The Lennox Smart Air Quality Monitor helps take the guesswork out of maintaining a cleaner, more comfortable home. This intelligent monitoring system continuously measures fine airborne particles (PM2.5), carbon dioxide (CO2), and volatile organic compounds (VOCs), which can come from household products, cooking, and other everyday activities. When connected to a compatible Lennox S40 Smart Thermostat, the monitor displays indoor air quality readings and alerts you when conditions change. You can also check your home's air quality through the Lennox Home App. What makes this system especially useful is its ability to work with compatible Lennox air filtration, purification, and ventilation equipment. When air quality declines, your HVAC system can automatically circulate, filter, or refresh indoor air based on the equipment installed. Unlike a basic standalone air quality sensor, this monitor can help your heating and cooling system respond to changing indoor conditions. In Demand Plumbing, Heating & Air can evaluate your existing HVAC equipment, confirm compatibility, and professionally install and configure the Lennox Smart Air Quality Monitor to help you take greater control of your home's indoor environment.
Manufacturer Warranty: Lennox lists a 2-year limited warranty on covered components. Registration requirements, exclusions, and eligibility conditions should be checked against the applicable warranty document before approval.
Little Firefighter
Automatic Gas Shutoff Protection When an Earthquake Strikes
Automatically interrupts gas flow when qualifying seismic shaking occurs
Does not depend on household electricity
Helps limit continued gas supply to downstream piping after activation
Automatic Gas Shutoff Protection When an Earthquake Strikes
At In Demand Plumbing, Heating & Air, we believe a new heating system should be installed with safety in mind. That's why we install Little Firefighter earthquake-activated gas shutoff valves when required by applicable codes or appropriate for the installation.
During a significant earthquake, damaged gas piping and connections can create dangerous gas leaks. A Little Firefighter seismic gas shutoff valve is designed to automatically stop gas flow when earthquake shaking reaches its activation threshold, helping reduce the risk of continued gas flow through damaged downstream piping.
Unlike a manually operated gas shutoff valve, this safety device works automatically and does not require electricity or homeowner intervention to activate.
Why homeowners benefit:
Our technicians install gas safety equipment as part of a properly planned heating system installation, helping protect your home beyond everyday heating and cooling performance.
Because a quality HVAC installation isn't just about comfort. It's also about protecting your home and family.
Current offers
$50 off
Save $50 on qualifying heating and air conditioning services totaling $500 or more with In Demand Plumbing, Heating & Air. Whether you need AC or heating repairs, we're here to help keep your home comfortable.
Offer ends: December 31, 2027
Valid on qualifying HVAC services with a pre-discount subtotal of $500 or more. $50 discount applies to one qualifying service transaction. Cannot be combined with other offers. Additional restrictions may apply.
5% off
At In Demand Plumbing, Heating & Air, we appreciate our senior community! Customers aged 65 and older receive 5% off their entire plumbing, heating, or air conditioning job, including labor, materials, and equipment. From everyday repairs to complete system installations, we're proud to help seniors save on home comfort services.
Offer ends: December 31, 2027
Valid for customers aged 65 or older. Discount applies to the entire job invoice, including labor, materials, and equipment. Proof of age may be required. Cannot be combined with any other offers, coupons, promotions, or discounts.
5% off
In Demand Plumbing, Heating & Air proudly offers a 5% military discount to active-duty military members and veterans as a thank-you for their service. Save 5% on your entire plumbing, heating, or air conditioning job, including labor, materials, and equipment.
Offer ends: December 31, 2027
Valid for active-duty military members and veterans. Discount applies to the entire job invoice, including labor, materials, and equipment. Proof of military service or veteran status may be required. Cannot be combined with any other offers, coupons, promotions, or discounts.
We install it. We stand behind it.
Our installation guarantees explain how we stand behind eligible equipment installations and respect your home during the work.
We stand behind our craftsmanship for the life of the equipment we install.
If you’re not comfortable with the performance of your new system, we’ll make it right.
The price we agree on is the price you pay. No surprise labor charges.
We respect your home like it’s our own. We protect your property and clean our work area when we’re finished.
Done right. Tested right. Explained right. Every system is installed to code, started, tested and walked through with you.
Lifetime Labor Guarantee requirements: Equipment must be installed by In Demand Plumbing, Heating & Air; the Home Protection Plan must remain active without interruption; and required maintenance must be completed as scheduled. Guarantees apply to eligible work and are subject to their full terms.
Read the complete Comfort Guarantee terms →Home protection plans
Explore ongoing maintenance and member benefits for your home. Choose the coverage that fits your needs.
$14.95/month
$24.95/month
Plan benefits and services are subject to the applicable membership terms. The Comfort Guarantee and maintenance plan eligibility are not identical.
Your questions
It may be possible, but electrical supply, system configuration and the home’s requirements need review. We discuss a suitable approach after the assessment.
The home, existing system, energy source, distribution and comfort goals should all be considered when selecting equipment.
It may be possible. Electrical supply, system configuration and the needs of the home need to be reviewed first.
Only when ductwork changes are included in the proposed scope. Existing ducts should be reviewed as part of the project.
The schedule depends on the equipment and any supporting work required for the property.
Yes. Explore our service areas or contact our team about your property address.
Related services
Customer voices
★★★★★
I had an excellent experience with In Demand Plumbing, Heating & Air, especially Ezequiel and Donald. Ezequiel was professional, patient, knowledgeable and reassuring from the moment he arrived. I was dealing with a very stressful water-damage situation, and he took the time to listen as I…
I had an excellent experience with In Demand Plumbing, Heating & Air, especially Ezequiel and Donald. Ezequiel was professional, patient, knowledgeable and reassuring from the moment he arrived. I was dealing with a very stressful water-damage situation, and he took the time to listen as I explained what I had observed. He quickly identified the source of the problem—a broken toilet supply line upstairs that had caused significant water damage. He clearly explained what happened, completed the repair, restored the water and thoroughly tested everything to make sure there were no additional leaks. I especially appreciated Ezequiel’s communication and the time he took to discuss prevention, including recommending a Moen Flo system to help detect and mitigate potential water issues in the future. Donald, the HVAC technician, was also extremely helpful. He checked the HVAC system while they were there at no additional charge and made such a positive impression that I scheduled an appointment with him for next week to follow up on the system. Excellent customer service all around. Both Ezequiel and Donald made a stressful situation much easier to manage through their professionalism, knowledge and kindness. I would absolutely recommend In Demand Plumbing, Heating & Air.
★★★★★
Tech showed up on time. Very professional yet also friendly. He did the work and showed us pictures of our AC unit. Expressed what was working well, and what could be improved. Excellent service
★★★★★
We had a great experience with In Demand Plumbing! Jesse came to our house to help with our plumbing needs and was quick, efficient, and professional. Don also came out for an HVAC checkup and was extremely thorough and communicative. He took the time to explain everything clearly and made sure we…
We had a great experience with In Demand Plumbing! Jesse came to our house to help with our plumbing needs and was quick, efficient, and professional. Don also came out for an HVAC checkup and was extremely thorough and communicative. He took the time to explain everything clearly and made sure we understood his findings and recommendations. Both Jesse and Don arrived on time and provided excellent service. We really appreciated their professionalism and would definitely recommend In Demand Plumbing!
★★★★★
Ben deserves 10 stars, but You only have room for 5. He was so good to take time to explain every thing He did so now I have a good idea of how the heater and A.C. work. He also knows how to explain things so a 92 year old can understand just how things work. He deserves a BIG RAISE.
★★★★★
Of course, when it's one of the hottest days of the year, the A/C will act up. I called and Jasmin got Don (Don the HVAC guy) out here first thing the next morning. We have used In Demand years ago for our plumbing needs and now will use them for our HVAC needs. Don was very thorough and explained…
Of course, when it's one of the hottest days of the year, the A/C will act up. I called and Jasmin got Don (Don the HVAC guy) out here first thing the next morning. We have used In Demand years ago for our plumbing needs and now will use them for our HVAC needs. Don was very thorough and explained everything that he did to get our archaic A/C going again. It is a gift to find a company that does business "old school". Showing up on time, being knowledgeable and answering questions as well as a positive attitude. Don is the type of service person you want in your home.
★★★★★
Great work from Bento whose come to our house twice now for plumbing and Donald for HVAC support. Both have been patient, explained the work they were doing and called before hand so as to not wake my napping toddler.
Awards & recognition
Awards, accreditation and community recognition earned by In Demand Plumbing, Heating & Air.
Nextdoor
In Demand Plumbing, Heating & Air was recognized as a 2025 Nextdoor Neighborhood Fave.
Better Business Bureau
In Demand Plumbing, Heating & Air is a BBB Accredited Business with an A+ rating.
Talk to our team
Schedule heating installation for your Antioch property or call our team about the problem.
