Call (636) 327-8349

Dining room hot and the rooftop unit's down? We'll have it cooling again.

Restaurant HVAC repair: rooftop units, make-up air and kitchen exhaust, with the same four-hour emergency response as our refrigeration work.

Call (636) 327-8349Email Request

What we service

The whole system that keeps a kitchen and a dining room breathing.

  • Rooftop unitsHeating and cooling for the dining room and kitchen.
  • Make-up air unitsThat replace the air your hoods pull out.
  • Kitchen exhaust fans and hoodsThat pull the heat and smoke.
  • Walk-in and kitchen-area coolingWhere the line runs hottest.

Why is restaurant HVAC different? The kitchen fights the air

  • Doors whistle or slamThe building is pulling air in through every gap.
  • The hood stops drawingSmoke rolls out into the kitchen.
  • The dining room runs hotThe rooftop unit can't keep up with the kitchen.
  • Cold air pours inIn winter, when make-up air isn't heating what it brings in.

A kitchen pushes heat and grease into the air all day. Exhaust pulls air out, and make-up air has to replace it. When it can't, you see it here first. We work on the whole system, not one box on the roof.

Four hours, then fixed once

For an emergency we're on site within four hours. And 98% of our calls are completed in one trip.

Call (636) 327-8349
  1. You callThe dining room is warming and the unit is down.
  2. Under 4 hoursA technician is on site for an emergency.
  3. Fixed once98% of calls completed in one trip.

Three steps, starting now

  1. 1

    You call and tell us what's down and where.

  2. 2

    We send a technician, on site within four hours for an emergency.

  3. 3

    We fix it right the first time. 98% of our calls are completed in one trip.

What restaurant managers say

  • “I called FastFix and was expecting a mugging. Yet I was pleasantly surprised by the fast service and reasonable bill”

    Google review, FastFix Columbia, August 2026

Billed the way chains pay

Your accounts team knows the terms before we arrive.

Get our terms and W-9
Time and materials
For the hours on site and the parts we fit.
A not-to-exceed amount
For chains, with a written quote before anything above it.
Net 30
On every invoice.

Check the units before the season turns

A visit every quarter catches most rooftop failures before the first hot day or the first cold morning.

Get a Maintenance Plan Quote
  • Rooftop units, belts and filters checked every quarter
  • Make-up air checked so it heats and cools what it brings in
  • Exhaust fans and hoods checked so they draw

Questions managers ask

Do you install new rooftop units?

No. We repair and maintain the units you have.

Can you check our units before summer?

Yes, as part of a maintenance plan. Maintenance plans

Guides for managers

Hot dining room? Call now.

St. Louis MetroCall (636) 327-8349Columbia and mid-MissouriCall (573) 544-0456
Call (636) 327-8349Email Request