Grandmark commercial HVAC technician, Fresno
Grandmark commercial HVAC technician, Fresno
MINIMAL DOWNTIME · SCHEDULED AROUND YOU

Commercial HVAC

Keep your business running while we handle repair, replacement, and maintenance — scheduled around your operating hours, with a free assessment and written scope before any work begins.

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Free Site Assessment
Scheduled Around Your Hours
Financing Available
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No obligation · We’ll route you to the nearest office

MINIMAL DOWNTIME · SCHEDULED AROUND YOU

Commercial HVAC

Repair, replacement, and maintenance scheduled around your operating hours.

No obligation · We’ll route you to the nearest office

Free Site Assessment
Scheduled Around You
Financing Available
Get a Free Site Assessment

No obligation · We’ll route you to the nearest office

Licensed & InsuredCSLB #1030917
BOSCH CertifiedHVAC TECHNICIANS
4.8★ on GoogleREAD REVIEWS →
Family-OwnedSERVING CALIFORNIA
The short answer

Priced by unit count, tonnage, and access

Commercial HVAC is quoted differently than residential — the number depends on the number of rooftop or split units, total tonnage, ductwork condition, and access. We provide a firm written quote after a free site assessment, scheduled around your business hours, not a generic per-square-foot estimate.

What we handle for businesses

One call for the whole system

01

Repair & emergency service

Rooftop unit and split system repair for offices, retail, and light industrial spaces — diagnosed on video before any quote.

02

Replacement & new installation

Properly sized systems for new builds or full swaps, scheduled to minimize disruption to your operations.

03

Preventive maintenance contracts

Scheduled maintenance visits that catch problems before they become an emergency shutdown during business hours.

04

Rooftop & packaged units

Service and replacement for the rooftop package units common in retail centers and light commercial buildings.

05

Multi-zone systems

Repair and maintenance for buildings with multiple zones or tenants, each with different comfort needs.

06

Indoor air quality

Ventilation, filtration, and air quality solutions for offices and retail spaces where occupant comfort matters. See indoor air quality.

Built around your operations

Minimal disruption, maximum documentation

Free site assessment

We walk the property and document the actual system condition on video before quoting anything, scheduled at a time that works for your business.

Written scope by unit

A clear quote by unit count, tonnage, and system type, with a realistic timeline that accounts for your operating hours.

Work scheduled around you

Off-hours or phased work available for properties that can’t have HVAC crews on-site during business operations.

Completion documentation

Video record of the finished work for your property records, insurance, or future maintenance planning.

Not sure this is your situation?

See the right page for your property

If it’s a smaller residential job or you already know the scope, these pages might fit better.

Financing

Financing options for qualifying commercial projects

Spread the cost of a larger commercial system or project across manageable monthly payments. See HVAC financing → for full details.

Get a Free Site Assessment
BOSCHCertified technicians
0%Financing available
1,200+Five-star reviews
0Excuses on callbacks
Verified reviews

What our customers say

4.8 stars across verified Google reviews. Read every review →

They not only did everything they said they would do in the estimate, they went above and beyond and came out on New Year’s Day to finish the job.

— Steve Larson, Sacramento, CA (verified Google review)

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!

— Monica Ornelas, Fresno, CA (verified Google review)

Tony and his partner found an issue created by another company that could’ve set my home on fire. Incredible job, completed in a timely manner.

— Maria T., Clovis, CA (verified Google review)
Why property managers trust the documentation

The same standard as every other job

Every commercial project follows The Grandmark Standard → — video-documented assessment and completion records that support your property maintenance files, insurance requirements, or ownership transitions.

Where we work

Commercial HVAC by market

Site assessments scheduled around your business hours in Fresno and Visalia.

Straight answers

Commercial HVAC FAQ

How is commercial HVAC priced differently than residential?

Commercial quotes are based on unit count, total tonnage, system type, and access — not a flat per-project rate. We provide a firm quote after a free site assessment.

Can work be scheduled around our business hours?

Yes, off-hours and phased scheduling is available for properties that can’t have crews on-site during operating hours.

Do you offer maintenance contracts for multiple units?

Yes, scheduled preventive maintenance is available for properties with multiple rooftop or split units, helping avoid unexpected downtime.

What types of commercial systems do you service?

Rooftop package units, split systems, and multi-zone systems for offices, retail, and light industrial spaces.

Do you offer financing for commercial HVAC?

Yes, financing options are available for qualifying commercial projects. See HVAC financing for full terms.

Get a commercial HVAC quote

Free site assessment, scheduled around your operations, video-documented every step.

Get a free quote

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No pressure, just real numbers. Scroll up to use the quote form, or call (866) 945-6473 instead.

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