Same-Day Service
Call before noon and we're at your door the same day. No AC in July or heat in January is an emergency — we treat it like one.
24/7 EMERGENCY SERVICE · GREATER CINCINNATI
Reliable Heating & Cooling Solutions for Greater Cincinnati
From emergency furnace repairs to high-efficiency AC installations, our certified technicians keep your home comfortable in every season — with upfront pricing and same-day service.
4.9-Star Rated
300+ verified reviews
NATE-Certified
Factory-trained technicians
Licensed & Insured
Ohio & Kentucky
Why Miller
Comfort you can count on, service you can trust
Greater Cincinnati homeowners have trusted our family with their comfort for over 15 years. Here's why they keep calling back.
NATE-Certified Technicians
Every tech is NATE-certified, background-checked, and factory-trained on all major brands — Carrier, Trane, Lennox, and more.
Upfront, Flat-Rate Pricing
You approve the exact price before we touch a single screw. No hourly surprises, no hidden fees, no pressure to upsell.
100% Satisfaction Guarantee
If you're not completely happy with our work, we'll make it right — period. That's how we've earned 300+ five-star reviews.
Our Services
Complete HVAC services, one trusted team
Whatever your home's comfort needs, we handle it end to end — repair, replacement, maintenance, and air quality.
Air Conditioning Repair
Fast diagnosis and repair of any make or model — most AC repairs completed in a single visit.
Get a quoteAC Installation
High-efficiency systems sized correctly for your home, professionally installed and backed by strong warranties.
Get a quoteFurnace Repair
Strange noises, short cycling, or no heat at all — we'll find the root cause and fix it right the first time.
Get a quoteFurnace Installation
Energy-efficient gas and electric furnaces installed to manufacturer spec, so you save on every bill.
Get a quoteHeat Pumps
One system for year-round comfort. We install, service, and repair the latest cold-climate heat pumps.
Get a quoteIndoor Air Quality
Whole-home air purifiers, humidifiers, and duct cleaning for cleaner, healthier air your family can feel.
Get a quoteHVAC Maintenance
Seasonal precision tune-ups that prevent breakdowns, extend equipment life, and lower energy costs.
Get a quoteEmergency Repairs
Heating or cooling emergency? Our on-call technicians answer 24/7, including weekends and holidays.
Get a quote
Family-Owned & Operated
Proudly local since 2009
About Miller
The neighbors Cincinnati calls when comfort matters
Miller Heating & Cooling started with one truck, one technician, and a simple promise: treat every home like it's our own. Today our team keeps thousands of Greater Cincinnati families comfortable year-round — and that promise hasn't changed.
- Family-owned and operated — never a franchise
- Technicians who arrive on time and respect your home
- Straightforward recommendations, never scare tactics
- We service every major brand, no matter who installed it
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Years serving Cincinnati
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Systems repaired & installed
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Average Google rating
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Emergency availability
Comfort Club Membership
Stop paying for breakdowns. Start preventing them.
Most emergency calls we run could have been prevented with routine maintenance. The Comfort Club keeps your system tuned, your warranty valid, and your energy bills down — for less than a streaming subscription.
Two precision tune-ups a year
A full cooling check in spring and heating check in fall — 21 points each.
Priority scheduling
Members jump to the front of the line, even during peak-season rushes.
15% off all repairs
Automatic discount on parts and labor, every visit, no fine print.
No after-hours fees
Emergencies at 2 AM cost the same as 2 PM. Membership has its perks.
Most Popular
Comfort Club
$16/month per system
- 21-point seasonal inspections
- Filter replacement on every visit
- Condenser coil cleaning
- Carbon-monoxide safety check
- Extended equipment lifespan
- Transferable if you sell your home
Cancel anytime. No long-term contract.
Flexible Financing
Comfort today. Payments that fit.
A new HVAC system is a big investment — your monthly payment doesn't have to be. Through our trusted lending partners, approved homeowners get fast, flexible options with no prepayment penalties.
Explore Financing Options
*With approved credit. Terms and conditions apply.
0% APR for 18 Months
Replace your system now and pay zero interest for a year and a half on qualifying installations.
Low Monthly Payments
Spread the cost of a new high-efficiency system over terms up to 10 years — many start under $89/month.
60-Second Pre-Qualification
Check your options online with a soft credit pull that never affects your credit score.
Rebates & Tax Credits
We handle the paperwork for utility rebates and federal energy tax credits — savings up to $3,200.
No heat? No cool? No problem.
Our technicians are on call right now across Greater Cincinnati — most repairs are done the same day you call.
Recent Projects
Real homes. Real transformations.
Drag the slider on each project to see the difference a properly installed, properly maintained system makes.
AfterWest Chester, OH
Complete System Replacement
Swapped a failing 20-year-old unit for a 17-SEER2 high-efficiency system — cooling bills dropped about 30%.
AfterLoveland, OH
Cold-Climate Heat Pump Install
Ended the upstairs-too-hot, downstairs-too-cold battle with a zoned heat pump and new smart thermostat.
AfterHyde Park, Cincinnati
Whole-Home Air Quality Upgrade
Duct cleaning plus a whole-home purifier and humidifier — allergy season finally stays outside.
Customer Reviews
Rated 4.9 out of 5 by your neighbors
From 300+ verified Google reviews across Greater Cincinnati and Northern Kentucky.
“Our AC died on the hottest day of July with a newborn in the house. Miller had a technician here within three hours, and the price matched the quote to the penny. I can't recommend them enough.”
Service Areas
Proudly serving Greater Cincinnati& Northern Kentucky
Fast response times across the entire metro — our trucks are already in your neighborhood.
CincinnatiMasonWest ChesterLovelandBlue AshFairfieldHamiltonMilfordAnderson TownshipMontgomeryMadeiraNorwoodHyde ParkFlorence, KYCovington, KYNewport, KY
Don't see your neighborhood? Give us a call — chances are we cover it.
Common Questions
Answers before you even have to ask
Straight answers to the questions Cincinnati homeowners ask us most.
Yes — a live member of our team answers the phone around the clock, including weekends and holidays. Comfort Club members never pay after-hours fees, and we stock our trucks so most emergency repairs are finished in one visit.
Schedule Service
Let's get your home comfortable again
Tell us what's going on and we'll call you back within one business hour to confirm your appointment — usually much sooner.
Monday – Friday: 7:00 AM – 7:00 PM
Saturday: 8:00 AM – 4:00 PM
Sunday: Emergency service only
No-pressure quotes. No service fee with completed repair.