If you've searched "HVAC near me" in Hamilton and gotten a screen of lead-generation ads, this guide is the opposite of that. We looked at heating and cooling contractors actually based in or regularly serving Hamilton, Ohio — Butler County's seat, where the Ohio River valley delivers humid summers and genuinely cold winters — and checked each one's own listing before including it here. What's left is six real options for furnace and air conditioning work.
1. Bartels Heating & Cooling — 24-hour heating & cooling
With 467 reviews at a 4.9-star average, Bartels is the most-reviewed HVAC contractor in Hamilton, working from Main Street with 24-hour availability. Reviewers mention technicians walking them through how to operate a newly installed system.
- Address: 929 Main St, Hamilton, OH 45013
- Phone: (513) 867-8629
- Website: bartelsheatingandcooling.com
2. Miami Heating and Cooling — furnace & AC installation and repair
Miami Heating and Cooling operates from Tonya Trail in Hamilton with a 4.8-star rating across 209 reviews, offering on-site service for heating and air conditioning.
- Address: 4159 Tonya Trail, Hamilton, OH 45011
- Phone: (513) 275-5308
- Website: miami-heating.com
3. Preferred Home Comfort Heating and Cooling — air conditioning & heating service
Preferred Home Comfort works out of Gilmore Road in Hamilton with a 4.9-star rating across 114 reviews, handling air conditioning and heating installation and repair on-site.
- Address: 6741 Gilmore Rd Suite A, Hamilton, OH 45011
- Phone: (513) 892-4822
- Website: preferredhomecomfort.com
4. Fairfield-Hamilton Heating & Cooling — 24-hour HVAC service
Named for the two cities it covers, Fairfield-Hamilton Heating & Cooling runs from Dixie Highway in Fairfield with a 4.8-star rating across 160 reviews, 24-hour availability, online estimates and online booking.
- Address: 6660 Dixie Hwy Ste 302, Fairfield, OH 45014 (serving Hamilton)
- Phone: (513) 342-8852
- Website: fairfieldhamiltonhvac.com
5. Cornett's Heating and Air Conditioning — heating & cooling repair
Cornett's is a smaller Hamilton HVAC contractor on Morris Road that lists 24-hour availability for heating and air conditioning work.
- Address: 6961 Morris Rd, Hamilton, OH 45011
- Phone: (513) 863-3575
- Website: cornettheatingandair.com
6. Hamilton Heating & Air Conditioning — air conditioning contractor
Hamilton Heating & Air Conditioning is a small local air conditioning contractor on Canastota Drive with a 4.9-star rating. No website is listed, so call directly.
- Address: 6396 Canastota Dr, Hamilton, OH 45011
- Phone: (513) 513-5520
- Website: Not listed — call to inquire
A few questions before you call anyone
How many quotes should I get before replacing a furnace or AC in Hamilton?
Two or three. Full system replacement is one of the biggest single home expenses most people face, and pricing for the same equipment varies widely between contractors. Ask each to explain the sizing calculation rather than just quoting a unit.
Do HVAC contractors need a licence in Ohio?
Ohio licenses HVAC contractors through the Ohio Construction Industry Licensing Board for most new-construction and commercial work, while a lot of straightforward residential service falls outside that. Ask any contractor directly about licensing and insurance.
When is the best time to schedule HVAC work?
Spring and autumn, in the shoulder seasons. Booking a furnace tune-up before the first cold snap or an AC check before the first humid stretch means you aren't waiting behind emergency calls — and several contractors above, including Bartels and Fairfield-Hamilton, list 24-hour availability when it can't wait.
We don't accept payment for inclusion in this list. Every company above was chosen and independently verified by us, and this article isn't professional legal or financial advice. See something out of date? Let us know and we'll fix it.
