Get Approved No Impact On Credit Score
1,119+ Google Reviews
4.8
Get the A/C You Need. See the Proof Before You Pay.
We believe you shouldn’t have to guess if a new A/C is worth the investment. At Grandmark, we use X-Ray Financial Diagnostics to prove exactly how much money you’re losing to an inefficient system.
Why Our Financing is Different:
X-Ray Transparency: We show you proof of your current unit’s failure so you know exactly where your investment is going.
Guaranteed Energy ROI: By using data to calibrate your new install, we ensure your monthly energy savings help pay for the system itself.
The "Yes" for Every Budget: We specialize in $0-down options and approvals for challenged credit, because a cool home is a necessity, not a luxury.
LIMITED TIME OFFER: Rejuvenate Your Roof for $0 Down.
Your asphalt shingles are rehydrated and protected for years, avoiding a costly roof replacement. For a limited time, get our signature Roof Tune-Up & Rejuvenation Treatment with 0% interest financing for 18 months.
Don't let your roof dry out in the Central Valley heat—give it a new lease on life today.
Why this offer is a no-brainer:
5-Year Guarantee: You get immediate peace of mind and protection for half a decade.
Complete Protection: Includes a full tune-up of vents, skylights, and chimneys before the treatment is applied.
Zero Stress Financing: Even with credit challenges, you can protect your home today with no money out of pocket.
About us
The Authority in Dual-Trade Protection
Most HVAC techs treat your roof like a sidewalk. A roofer isn't licensed to move your AC, and an AC tech doesn't understand roofing—leaving you stuck in a "grey area" of blame and leaks. At Grandmark, we've eliminated the finger-pointing. As dual-licensed experts, we handle the mechanical and the structural as one integrated system. Using X-Ray Diagnostics, we find the hidden failures and leaks that other contractors miss.
Financing Your Armor-Clad Comfort
A failing A/C doesn't care about your credit score, but we do. We believe every family in Fresno deserves a cool home and a dry roof.
Approvals for Challenged Credit: We work with specialized lenders to help those who have been turned down elsewhere.
$0 Down Options: Start your integrated installation today with no upfront costs.
Proof Before You Pay: Use our X-Ray diagnostics to see exactly what you are paying for before the work even begins.
5,000+
Projects Completed
Protecting families across the Central Valley with honest, data-backed Air Condiitioning Services.
Our Process
Perfect Comfort Starts With Facts
The Precision System Assessment
Before any work begins, we perform a deep-dive diagnostic of your home’s existing ecosystem. Our technicians don’t just look at the AC; they evaluate the vital connection between your cooling system and your roof’s structural integrity.
The Transparent Diagnostic Quote
We believe you shouldn't have to guess what you’re paying for. After our initial assessment, we provide a comprehensive Diagnostic Report & Quote that shows you the exact state of your home’s systems through visual evidence.
The Armor-Clad Integrated Installation
This is where your investment becomes a permanent shield for your home. We don't just "swap" your air conditioner; we perform a synchronized installation that treats the unit and your roof as a single, warrantied system.
Reviews
See Why Neighbors Trust Grandmark for Their A/C
With 1,119+ 5-Star Reviews, we are the Central Valley’s most trusted choice for integrated home comfort. We don’t pressure you with sales tactics—we show you the X-Ray facts so you can make the right decision for your home’s cooling and structural safety.
Sarah J
Homeowner
Diane Cole
Homeowner
Nick Pistoresi
Homeowner
The Grandmark AC Installation System
We don’t just swap out units. We install a complete, integrated cooling system designed to withstand Fresno’s extreme heat while protecting your home’s structural integrity. Every installation is verified by X-Ray diagnostics to ensure your system runs at peak efficiency without hidden risks.
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Maximum Efficiency. Minimum Waste.
We use thermal imaging to find "heat bleeds" in your attic and ductwork, ensuring 100% of your cold air stays in your living space.
Cool Home Technology
Our systems go beyond the unit. By optimizing airflow and attic ventilation, we reduce the load on your A/C to significantly lower your summer energy bills.
10-Year Efficiency Guarantee
Backed by our Grandmark Guarantee—covering both your high-efficiency unit and our precision, leak-proof installation for a full decade.