HVAC Services in the Central Valley
Get a free inspection and see on video exactly what’s wrong before you approve a dollar of work. Licensed in-house technicians serving Fresno, Visalia, Clovis, Madera, Sanger, Selma, Los Banos, Porterville and surrounding Central Valley communities.
No obligation · We’ll route you to Fresno or Visalia
BOSCH certified, one standard on every call
Grandmark Service Company (CSLB #1030917) is a family-owned and operated roofing and HVAC company serving homeowners and businesses in Fresno and Visalia. Our own in-house technicians — never subcontractors — diagnose the real cause of an HVAC problem first, document every repair on video, and give you a written flat-rate quote before any work is approved. Read the standard behind every job on The Grandmark Standard →, or see how we find the cause on our X-Ray Diagnostic Process →
Every HVAC service Fresno and Visalia need
Most HVAC companies patch the symptom and leave. We diagnose the real cause, show you on video, and put the price in writing before we start.
AC Repair →
We find the real cause, not just the visible symptom. Video-documented, flat-rate, and backed by our callback policy.
AC Installation →
Manual J load calculation before equipment selection, so the system is sized to your home rather than upsized for margin.
AC Replacement →
Full system replacement when repair no longer makes financial sense. Every installation documented start to finish.
Furnace Repair →
Furnace and heat pump diagnosis with a carbon monoxide safety check on every heating call, not just when asked.
AC Tune-Up & Maintenance →
Scheduled maintenance that catches the failures Central Valley heat causes before they become an emergency call.
HVAC Financing →
$0 down options with same-day approval. Most homeowners qualify without a hard credit pull.
No cooling or no heat? Don’t wait for a scheduled slot.
An AC failure during a Central Valley heat wave is a health issue, not an inconvenience — and a furnace failure in January is the same. We dispatch to emergencies ahead of routine calls in both Fresno and Visalia. Start with HVAC emergency service →
Full-system HVAC services
Beyond repair and replacement — the specialty and whole-system work Fresno and Visalia homes and businesses actually need.
Know the number before the technician arrives
We publish real ranges rather than making you call for a number. Start with the HVAC cost guide → or the AC installation cost guide → for a full breakdown by system size and efficiency rating.
18 months, zero interest →
Best for repairs and replacements under $10,000. Same-day approval and no early payoff penalty.
Down, every time →
No money down on any HVAC service in Fresno or Visalia, with no hard credit pull to check your options.
Energy efficiency rebates →
California utility and state rebates can offset a high-efficiency system. We identify what your project qualifies for.
We fix the problem, or you don’t pay.
If we diagnose your system and repair it, and the same problem returns, we make it right at no charge. We don’t recharge refrigerant without finding the leak, and we don’t replace parts without establishing why they failed. Keeping a system healthy between calls is covered in our HVAC maintenance guide →
$89 video diagnostic
We document your system’s actual condition on video before recommending anything, so you see exactly what we see. The $89 is credited back in full toward any approved repair.
Written quote, same visit
Flat-rate pricing in writing before any work begins. No hourly meter and no surprise add-ons.
We fix the cause
We repair the real source of the problem rather than patching what’s visible, so the fix actually holds.
Callback guarantee
If the same problem returns, we make it right at no charge. The completion video is yours as a permanent record.
Why HVAC systems fail faster here
The Central Valley pushes HVAC systems through conditions most manufacturers never designed for.
Extreme heat load
Summer temperatures regularly exceed 110°F. A system here can run 12–16 hours a day for four to five months, far more load than the same unit would see in a moderate climate.
Accelerated component wear
Capacitors and contactors held at high ambient temperatures degrade considerably faster than in mild climates, which is why the same part fails sooner here than the manufacturer’s rating suggests.
Agricultural dust and smoke
Valley dust and wildfire smoke load condenser coils and filters faster than in coastal markets, cutting heat rejection efficiency and forcing the system to run longer for the same result.
What Fresno and Visalia customers say
4.8 stars across verified Google reviews. Read every HVAC review → or see how we compare on our HVAC vs. competitors page →
Very professional, detailed and friendly. Diagnosed the problem quickly and had it fixed the same day. Romelo explained the findings from the pictures and video. Tune-up price was reasonable.
Raul really explained everything and took pictures so we could see before and after. Typing this in the cool comfort of my fixed AC. Thanks!
Tony was very professional and thorough. He took the time to answer my questions and listen to my concerns about my AC unit. He represents his company well.
HVAC questions, answered
More detail on the full HVAC FAQ →
How much does AC repair cost?
Most AC repairs range from $150 to $2,500. A capacitor or contactor replacement typically runs $200–$400, a refrigerant recharge with leak repair runs $400–$800, and a compressor replacement runs $1,200–$2,500. See the HVAC cost guide for a full breakdown.
How much does a new AC unit cost?
A full system replacement typically ranges from $4,500 to $15,000 depending on system size, efficiency rating, brand, and whether ductwork needs attention. See the AC installation cost guide for a full breakdown.
How long does an AC unit last in California?
In moderate climates a well-maintained system lasts 15–20 years. In the Central Valley, realistic service life is 10–14 years for a well-maintained system and 7–10 years for a neglected one.
How much is the diagnostic, and is it refundable?
The diagnostic is $89 and it is credited back in full toward any repair you approve. You get a video walkthrough of what we found and a written flat-rate quote before any work starts, so the $89 buys you a real answer rather than a guess over the phone.
Do you offer HVAC financing?
Yes. HVAC services are available with $0 down and 0% interest for 18 months for qualifying projects. See HVAC financing for full terms.
Do you offer same-day HVAC service?
Same-day service is available in Fresno and Visalia. Call and we’ll confirm what’s available in your area before you hang up — emergencies are dispatched ahead of routine calls.
Which areas do you serve for HVAC?
HVAC is available from our Fresno and Visalia offices and the surrounding Central Valley communities each one covers. See the HVAC service areas index for the full list.
Serving Fresno & Visalia
Licensed HVAC technicians dispatched from two California offices, with same-day service available in most areas.
Not sure which office covers your address? See the HVAC service areas index → Looking for roofing instead? Grandmark roofing covers a wider footprint — see Grandmark roofing services →
Replacing your roof? Your ducts are already exposed.
While the roof deck is open for a re-roof, it’s the cleanest time to access and replace ductwork — no ceiling cuts and no contamination inside the home. See the HVAC-side detail on Roof + Duct Combo → or the full Roof + Duct Combo overview →
Get your HVAC diagnosed, repaired, or replaced.
Same-day dispatch available in Fresno and Visalia. $89 diagnostic, credited back toward any approved repair. Emergency calls go ahead of routine appointments.