Home HVAC and Insulation in Sunnyvale, CA

Home HVAC and insulation in Sunnyvale from licensed pros. AC, heating, ducts & insulation done right. 24/7 service & honest pricing. Call (408) 608-8246.

HVAC Services for Sunnyvale Homeowners

Sunnyvale’s housing stock ranges from mid-century Eichlers with radiant slabs to newer two-story builds near the Apple campus, and each one calls for a slightly different HVAC approach. Our Sunnyvale technicians are trained across gas, electric, and hybrid systems, and we service every major brand — Carrier, Lennox, Trane, Bryant, Mitsubishi, Daikin, and more. We handle everything from quick diagnostic visits to full system design-and-install projects, and we’re available 24/7 for emergencies because a furnace doesn’t care what time it is when it quits.

HVAC Services

Air Conditioning Services

Sunnyvale summers may be milder than the East Bay, but inland heat waves regularly push thermostats past 95°F, and a reliable AC is no longer a luxury. Our air conditioning services cover central AC, ductless mini-splits, and heat pump cooling for homes of every size and vintage. We diagnose honestly, price fairly, and only recommend replacement when repair no longer makes financial sense.

AC Repair

A failing AC usually gives you warning signs — warm air, strange noises, short cycling, or a spike in your energy bill. Our AC repair team responds quickly across Sunnyvale, pinpoints the root cause, and walks you through every repair option before we pick up a wrench.

AC Maintenance & Tune-Ups

A yearly tune-up is the single best thing you can do to extend the life of your cooling system and avoid mid-summer breakdowns. Our AC maintenance service includes coil cleaning, refrigerant checks, electrical inspections, and airflow testing to keep your unit running at peak efficiency.

AC Replacement & Installation

When an older unit is no longer worth repairing, a modern high-SEER system can slash your cooling costs and dramatically improve comfort. Our AC installation experts properly size every system to your Sunnyvale home and handle permits, disposal, and startup from beginning to end.

5.0 Rated

4.6 Rated

5.0 Rated

4.6 Rated

Common HVAC Problems We Solve in Sunnyvale

Inconsistent Heating or Cooling

Uneven temperatures in your home often indicate issues like duct leaks, thermostat malfunctions, or failing components. We diagnose and fix these problems to restore balanced comfort throughout your living spaces.

Frequent System Cycling

If your HVAC system turns on and off repeatedly in short cycles, it wastes energy and strains the equipment. Our technicians identify the root cause—such as thermostat issues or refrigerant problems—and provide lasting repairs.

Poor Airflow

Reduced airflow can be caused by clogged filters, blocked ducts, or blower motor failures. We inspect and clean your system to ensure proper air circulation and improve overall efficiency.

Strange Noises

Rattling, banging, or squealing sounds from your HVAC system often signal mechanical problems or loose parts. Our experts quickly pinpoint and resolve these issues to prevent further damage.

Unpleasant Odors

Musty or burning smells may indicate mold growth, electrical faults, or debris in the system. We thoroughly inspect and clean your HVAC equipment to eliminate odors and improve indoor air quality.

High Energy Bills

An inefficient or poorly maintained HVAC system can cause your energy costs to spike. We offer energy audits and system tune-ups to optimize performance and reduce your monthly utility bills.

Heating Services

Sunnyvale winters rarely hit freezing, but damp 40°F mornings make a dependable heating system essential — and an underperforming furnace quietly wastes money every time it runs. Our heating services cover gas furnaces, electric furnaces, and heat pumps, with a focus on safety, efficiency, and long-term reliability. We’re also well-versed in the new electrification trend and can help you plan a smart transition from gas to heat pump heating.

Furnace Repair

Hot-and-cold spots, short cycling, a yellow burner flame, or a furnace that simply won't ignite all point to issues that should be addressed immediately. Our furnace repair technicians arrive fast, diagnose safely, and get your heat back on — often the same day.

Furnace Maintenance & Tune-Ups

An annual furnace tune-up catches worn igniters, dirty burners, and failing flame sensors before they leave your family in the cold. Our furnace maintenance service also includes a full combustion safety check to protect against carbon monoxide risk.

Furnace Replacement & Installation

If your furnace is pushing 15+ years or constantly breaking down, a new high-efficiency model can pay for itself in energy savings. Our furnace installation team handles proper sizing, ductwork compatibility, venting, permits, and start-up so the job is done to code and built to last.

Heat Pump Repair

Heat pumps do double duty as heater and AC, which means a single malfunction can leave you without year-round comfort. Our heat pump repair specialists are trained across all major inverter-driven and conventional models and can service both ducted and ductless systems.

Heat Pump Maintenance & Tune-Ups

Because heat pumps run all 12 months, routine maintenance matters even more than it does for traditional HVAC. Our heat pump maintenance program keeps refrigerant charge, coils, defrost cycles, and electrical components in top shape to protect your investment.

Heat Pump Replacement & Installation

If you're electrifying your Sunnyvale home or replacing an aging split system, a modern heat pump offers unmatched efficiency and may qualify for significant rebates. Our heat pump installation team will right-size your system, plan the electrical upgrades, and install everything cleanly the first time.

Annual HVAC Maintenance Plans

Protect your investments.

The cheapest repair is the one you never have to make — and that’s exactly what our annual maintenance plans are designed to prevent. Sunnyvale members get priority scheduling, a seasonal AC and heating tune-up, multi-point safety inspections, discounts on repairs and parts, and a longer equipment lifespan backed by manufacturer-recommended care. Our maintenance agreements pay for themselves through lower utility bills and fewer emergency calls, and they’re the easiest way to keep a 100% satisfaction guarantee active on your system year after year.

HVAC Brands We Work With

As a top-rated HVAC contractor, we have unmatched expertise with all types of brands and equipment.

And more! Call us at (408) 608-8246 to request a service!

Insulation Services

Many Sunnyvale homes — especially those built before the 1990s — are dramatically under-insulated, which is why your upstairs bedrooms feel like a sauna in July and a refrigerator in January. Quality insulation is the single most cost-effective upgrade for comfort and energy savings, and it makes any HVAC system work less to do more. Our insulation services cover every envelope of the home, from crawlspace to attic, using modern blown-in, batt, and spray foam materials matched to your specific needs.

Wall Insulation

Cold exterior walls and noisy interior walls are both solved by proper wall insulation, typically installed using dense-pack blown-in material that avoids tearing out drywall. Upgrading wall insulation can noticeably stabilize indoor temperatures and meaningfully cut heating and cooling costs.

Attic Insulation

Because heat rises, an under-insulated attic is the #1 reason Sunnyvale homes overheat in summer and lose warmth in winter. We remove old, contaminated, or rodent-damaged insulation and install new blown-in fiberglass or cellulose to modern R-value standards recommended by ENERGY STAR.

Air Duct Insulation

Uninsulated or thinly wrapped ductwork running through hot attics and cold crawlspaces wastes enormous amounts of conditioned air before it ever reaches your rooms. Our duct insulation work upgrades sleeves and wraps to current code, often improving system efficiency by 20% or more.

Crawl Space Insulation

Sunnyvale's older homes often have open, uninsulated crawlspaces that act like a giant cold sink beneath your floors. We insulate floor joists, seal vents where appropriate, and can pair the job with a vapor barrier to cut moisture, odors, and pest activity at the same time.

Indoor Air Quality Services

Indoor air in a tightly built home can be several times more polluted than the air outside, and between wildfire smoke, pollen from the Baylands, and daily cooking and pet dander, your HVAC system is the front line of defense. Our indoor air quality services address the full picture — ducts, filtration, attics, crawlspaces, and vents — so that the air your family breathes is clean, healthy, and allergen-free.

Air Duct Cleaning

Over time, ducts collect dust, dander, construction debris, and even rodent contamination that gets blown into every room each time the system runs. Our air duct cleaning service uses high-powered negative-pressure equipment and agitation tools to remove build-up and sanitize the system.

Air Duct Repair & Sealing

Leaky ducts silently waste 20–30% of the air your HVAC produces — which is why some rooms never heat or cool properly. Our duct repair and sealing team locates leaks, replaces damaged sections, and mastic-seals every joint for airtight performance.

Ductwork Installation

Undersized, poorly routed, or asbestos-era ductwork holds back even the best HVAC system and should be replaced rather than patched. Our ductwork installation service designs the right trunk-and-branch layout for your home and installs modern, insulated, properly balanced duct runs.

Crawl Space Cleaning

A dirty crawlspace full of old insulation, rodent waste, and moisture silently affects the air upstairs through the stack effect. Our crawl space cleaning team removes contamination, sanitizes the area, and sets it up for new insulation or a vapor barrier.

Air Filtration

A basic 1-inch filter simply can't handle Bay Area wildfire smoke or fine particulate — you need media, HEPA, or UV-based filtration integrated with your system. We install whole-home air filtration upgrades that capture allergens, viruses, and smoke particles without starving your HVAC of airflow.

Rodent Proofing

Rats and mice love Sunnyvale crawlspaces and attics, and once they're in, they chew ducts, ruin insulation, and create serious health hazards. Our rodent proofing service identifies every entry point, seals them with heavy-gauge mesh and hardware cloth, and restores cleanliness to the space.

Attic Cleaning

Contaminated attic insulation, droppings, and old building debris can slowly affect air quality throughout the entire house. Our attic cleaning service safely removes old material, sanitizes the deck, and prepares the space for fresh, high-R-value insulation.

Dryer Vent Cleaning

A clogged dryer vent is both a fire hazard and the reason your laundry takes two cycles to dry. Our dryer vent cleaning service removes every bit of lint from duct run to exterior hood, restoring proper airflow and dramatically reducing fire risk.

Request an HVAC or Insulation Service Online

Ready to schedule service or get a free estimate? Requesting service from FairPrice Heating & Cooling is quick and easy. Simply fill out our online service request form and one of our team members will be in touch promptly to confirm your appointment. We offer flexible scheduling, same-day availability for many services, and 24/7 emergency response — because we know home comfort issues don’t always happen at a convenient time.

You can also check out our current coupons and special offers to save on your next service, or explore our financing options if you’re planning a larger system upgrade.

Request HVAC Services

What Happens When You Call For HVAC Services

Schedule Your Appointment

Call us or submit a request online. For after-hour emergencies, please call us at (408) 608-8246.

Get a Straightforward Honest Evaluation

We show up on time, explain what your system needs, and offer clear options with no sales pitch.

Enjoy Reliable Comfort

Whether it’s a repair or new system install, you get peace of mind knowing the work is done right the first time.

What Sunnyvale-Area Customers Are Saying

Find out why homeowners across Sunnyvale and Silicon Valley are picking FairPrice Heating & Cooling as their choice wall insulation company.

Our heater furnace stopped working this summer, and I contacted FairPrice. Shlomi came over and identified the problem right away. Shlomi is very proactive and communicates updates constantly. The installation was on schedule and very quick. Shlomi also replaced some old pipes free of charge, without charging anything extra. We would highly recommend FairPrice for HVAC services.

Kelly Y.

Furnace Replacement

FairPrice Heating and Cooling did an excellent job replacing my air ducts and improving insulation in both the attic and crawl space. Shlomi and his crew was professional, efficient, and respectful of my home. I've already noticed better airflow and better quality air. Extremely recommended.

Eli Kurzan

Ductwork Replacement & Insulation

Shlomi and his assistant did a great job deep cleaning our air ducts and furnace. Shlomi was very nice and explained how the air duct system works and the details about cleaning. They were very efficient and deep cleaned all our air ducts, furnace, dryer duct, and condenser in approximately two hours. Would definitely recommend!

Shirley H.

Air Duct Cleaning & Furnace Cleaning

I had a great experience with the installation of my air conditioner. Shlomi and his team were on time, fast workers and the price was fair. They cleaned the area they worked in and everything was perfect. I would definitely use them in the future for any HVAC projects.

Kate Choy

AC Installation

I hired FairPrice — my neighbor told me about them. I had a deep cleaning of my air ducts by Shlomi. He was helpful, polite and professional. I had an unclean odor coming from my vents before the cleaning. The smell went away right after the cleaning. Amazing work!

Sharon L.

Air Duct Cleaning

Shlomi replaced our 35-year-old furnace with impressive professionalism. He was punctual, patient, and highly responsible throughout the complex installation. Beyond the repair, he offered great maintenance and filter suggestions while keeping the price very reasonable. It is rare to find such honest, high-quality service without hidden costs.

Henry Wang

Furnace Replacement

Why Choose FairPrice Heating & Cooling

There’s no shortage of HVAC companies serving the South Bay, but FairPrice Heating & Cooling stands apart in ways that matter to homeowners:

Family-Owned & Operated Since 2012 — We’re a local business, not a franchise. When you call us, you’re talking to the people who will actually show up and do the work.
Licensed, Insured & Experienced — All of our technicians are fully licensed and insured, with years of hands-on experience across all HVAC and insulation services.
Honest, Upfront Pricing — We provide free estimates and transparent quotes with no hidden fees or surprise charges. The price we quote is the price you pay.
24/7 Availability — HVAC emergencies don’t wait for business hours, and neither do we. We’re available around the clock, including weekends and holidays.
100% Satisfaction Guarantee — We stand behind every job we do. If you’re not satisfied, we’ll make it right.
Flexible Financing Available — We offer financing options to make larger system upgrades accessible for every budget.
All Major Brands Serviced — Carrier, Lennox, Trane, Rheem, Goodman, Bryant, Daikin, Mitsubishi, and more.

Need Help with Financing a New HVAC Installation?

Upgrade your home’s comfort without the upfront cost!

FairPrice Heating & Cooling is proud certified CaliforniaFirst HVAC contractor and to offers financing through Renew Financial. With easy approval and repayment through your property taxes, you can improve your HVAC system, boost your home’s energy efficiency, and enjoy year-round comfort — all with simple, affordable payments.

Zoning & Mini-Split Solutions

Enjoy personalized comfort in every room with ductless mini-split systems and custom zoning solutions.

Every home has different heating and cooling needs, and a one-size-fits-all solution doesn’t always provide the best comfort. Zoning systems and mini-split solutions offer a flexible way to control temperatures in different areas of your home, allowing you to customize comfort levels for each room. Whether you have a multi-story home, a room that’s always too hot or too cold, or areas that aren’t used frequently, zoning systems can help balance temperatures efficiently.

Mini-split systems provide an excellent solution for homes without ductwork or for homeowners looking to enhance their current HVAC setup. These systems allow for independent temperature control in each zone, improving comfort while reducing energy waste. Fairprice Heating & Cooling specializes in designing and installing customized zoning and mini-split solutions to meet your unique needs, helping you achieve a more comfortable and energy-efficient home.

Frequently Asked Questions About Home HVAC and Insulation in Sunnyvale

Do you service all areas of Sunnyvale?

Yes — we cover every Sunnyvale neighborhood, from Heritage District and Birdland to Ponderosa Park, Lakewood Village, and the newer developments near Moffett Park. Our technicians dispatch out of nearby Santa Clara, so response times across Sunnyvale are consistently fast. If you're anywhere in the 94085–94089 ZIP codes, we've got you covered.

What HVAC brands do you service and install?

Our technicians are factory-trained across every major HVAC brand, including Carrier, Bryant, Trane, Lennox, Rheem, Goodman, Daikin, Mitsubishi, and Fujitsu. That means we can service the equipment you already own and recommend the best brand for your next install based on your home, not a sales quota. We only install equipment we trust to last 15+ years.

How often should I have my HVAC system serviced?

Industry best practice — and manufacturer warranty requirements — call for one tune-up per year, ideally in spring for AC and fall for heating. Heat pumps, because they run year-round, benefit from two visits annually. Staying on a maintenance schedule extends equipment lifespan, keeps warranties valid, and prevents most emergency breakdowns.

Why is one room in my Sunnyvale home always hotter or colder than the rest?

Uneven temperatures usually come down to three culprits: leaky or poorly balanced ductwork, insufficient insulation in that part of the home, or an undersized HVAC system. A professional inspection can pinpoint the exact cause quickly. Often a combination of duct sealing and added attic insulation solves the issue without needing a new system.

Will upgrading my insulation really make a noticeable difference?

Absolutely — insulation is the single most impactful upgrade most Sunnyvale homeowners can make, especially in homes built before the 1990s. Proper attic and wall insulation can reduce heating and cooling loads by 20–40%, keeping rooms more comfortable while easing wear on your HVAC system. It also dampens outside noise, which is a bonus near busy corridors like Lawrence Expressway or El Camino Real.

My HVAC system works — do I really need duct cleaning or duct sealing?

If you've never had your ducts inspected, the honest answer is probably yes. Decades of dust, rodent activity, and unsealed joints are extremely common in Sunnyvale homes, and they quietly hurt both air quality and efficiency. A one-time inspection is inexpensive and tells you exactly where you stand.

Do you handle permits and HOA requirements for installations?

Yes — we pull all required City of Sunnyvale and Santa Clara County permits for furnace, AC, heat pump, and ductwork installations, and we schedule the inspections for you. For condos and townhomes with HOA review, we provide the documentation you need to get approval fast. You shouldn't have to navigate paperwork — that's our job.