Your local HVAC partner Heating, Cooling & Refrigeration service in Millersburg & the Holmes County area.

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Locally owned & operated

A To Z Refrigeration & Heating Heating, Cooling & Refrigeration in Millersburg, OH

Proudly serving the Millersburg, Ohio area and surrounding communities with furnace and air conditioning service, heat pumps, mini-splits, water heaters, thermostats, and commercial Refrigeration.

  • Mon–Fri, 7:00 AM – 5:00 PM
  • Millersburg & the Holmes County area
  • Installation estimates available

Specials · Offering now

Current Special: A TO Z VIP Plans

Stop worrying about your furnace quitting in January or your A/C giving out in July. VIP members get regular tune-ups, filters included, priority scheduling, and 10% off repair parts, all for one low monthly price.

  • Catch problems early before they turn into big repair bills
  • Keep your system running right with a clean, checked system every season
  • Jump the line with priority service when you need it most

VIP Tier 1

$14.95/month

A yearly tune-up plus member perks

  • 1 inspection & tune-up a year: pick a spring Cooling check or a fall Heating tune-up
  • 1 standard air filter replaced at your visit
  • 10% off repair parts: save on parts and components if your system needs a repair during the year
  • Fast-Pass scheduling: members get priority when you need service
  • 1-year plan, billed monthly
Join VIP Tier 1

Why a yearly inspection helps your furnace last longer

A furnace that never gets looked at works harder every year. Dust builds up on the burners and blower, filters clog, and small problems like a loose wire or a worn part go unnoticed until they take something else down with them.

  • Less strain on the system. A clean filter, blower, and burners mean the furnace doesn't have to fight for airflow, so motors and parts wear out slower.
  • Small fixes instead of big ones. We catch worn parts and weak spots early, before they cause a breakdown or damage other parts.
  • Safer operation. Checking the heat exchanger, venting, and carbon monoxide keeps your family safe and spots trouble before it gets serious.
  • Lower energy bills. A clean, well-adjusted furnace doesn't have to run as long to heat your home, so it uses less fuel and electricity.
  • No surprise breakdowns on the coldest night. Furnaces tend to break down when they're working their hardest. A fall check-up gets yours ready before the cold hits.
  • More even, comfortable heat. Good airflow and properly set controls help every room heat evenly, with fewer hot and cold spots.
  • Quieter running. Cleaning and checking the blower and motors can take care of rattles and squeals before they turn into a failed part.
  • Protects your investment. Many equipment manufacturers ask for yearly maintenance to keep your warranty in good standing.

Signing up takes one quick call: (330) 525-8575

What we do

Heating, Cooling & Refrigeration services

From a quick service call to a new system install, A to Z covers the equipment that keeps your space comfortable and your product cold.

Air Conditioning

AC repair, service calls, and new air conditioner installs to keep things cool when summer heats up.

Mini-Splits / Ductless

Ductless mini-split systems for Heating and Cooling rooms, additions, and spaces without ductwork.

Heating & Furnaces

Furnace service calls and furnace installs. We install Goodman equipment, including Goodman 92% multi-speed furnaces.

Heat Pumps

Heat pump service and installation for efficient Heating and Cooling. We carry GREE heat pumps.

Water Heaters

Water heater service and replacement so you can count on hot water again.

Thermostats

Thermostat installation and replacement to help you control your comfort and your system.

Commercial Refrigeration

Commercial Refrigeration service calls for coolers, freezers, and Refrigeration equipment that your business depends on.

Installation Estimates

Planning a new furnace, AC, heat pump, or mini-split? Call to set up an installation estimate.

Equipment we install: Goodman furnaces  •  GREE heat pumps

Your furnace is the lungs of your home

Every bit of air you breathe inside your home passes through your furnace. The blower pulls air in, runs it through the filter, and pushes it back out to every room, both in winter and when your A/C is running in summer. That makes your furnace the main thing standing between your family and the dust, pollen, and pet dander floating around the house.

  • Cleaner air to breathe. A fresh filter and a clean blower catch more dust, pollen, and dander instead of blowing it back through your home.
  • Easier on allergies. Less dust and pollen in the air can make a real difference for anyone in the house with allergies or asthma.
  • A cleaner house. When the filter does its job, less dust settles on your furniture and floors.

Think of it like an oil change. You wouldn't drive your car for years without changing the oil. Your furnace works just as hard, and regular tune-ups and fresh filters keep it running clean, safe, and strong for years to come.

Reviews

What our customers say

4.8 out of 5 on Google · 29 reviews

A to Z came out the same day to fix our air conditioner. Was able to order the part and have it in by the end of the day. Service is outstanding!!!!!!!

Derrick F.Google review · Aug 2026

We use A to Z Refrigeration & Heating for many of our rental properties we manage and we honestly can’t recommend them enough! They are always reliable, have great communication and most importantly, they actually take the time to diagnose and fix the issue instead of just trying to replace equipment every time something goes wrong. …

Hannah K.Google review · Aug 2026

I had an issue with my A/C unit. They came quickly and checked it out. They showed me the problem and quickly repaired it at a reasonable price. Definitely recommend! Fast and friendly service.

MikeGoogle review · Aug 2026

Came and did an awesome job. 1 week in and had an issue. They came within an hour and fixed it. Very happy with them. Will recommend a to z to everyone.

Thomas P.Google review · Aug 2026

Friendly, fast service. Thanks!

WGoogle review · Aug 2026

Super friendly, honest, punctual and extremely reasonable! Would & have recommended to others. Thanks guys for even working your holiday.

Wanda W.Google review · Jul 2019

Did good work, cleaned up after themselves.At very reasonable price.

David M.Google review · Aug 2018

Always excellent work, professional and friendly. Also good with my dogs.

Janet L.Google review · Aug 2017

See all reviews on Google

About us

Serving Millersburg since 2000

A To Z Refrigeration and Heating LTD started in 2000 with a simple goal: providing Millersburg families with honest, reliable climate control. With over twenty-six years of experience, we treat every home like our own.

We handle Heating, Cooling, and Refrigeration, from furnaces, air conditioners, and heat pumps to mini-splits, water heaters, thermostats, and commercial Refrigeration equipment. Whether you need a repair, routine maintenance, or a new installation, we're here to help.

Thank you for your business! We're grateful to be your local HVAC partner in Millersburg. Don't hesitate to reach out for maintenance, repairs, or any future needs.

— A To Z Refrigeration & Heating

Service area

We serve Millersburg, Ohio and the surrounding communities in the Holmes County area.

Not sure if you're in our area? Give us a call at (330) 525-8575 and we'll let you know.

We come to you Mobile service throughout Millersburg & Holmes County

Business hours

Monday7:00 AM – 5:00 PM
Tuesday7:00 AM – 5:00 PM
Wednesday7:00 AM – 5:00 PM
Thursday7:00 AM – 5:00 PM
Friday7:00 AM – 5:00 PM
SaturdayClosed
SundayClosed

Get in touch

Request service

The fastest way to reach us is by phone. You can also email us or send a request using the form below.

Call(330) 525-8575 Email usatoz.hvac.office@gmail.com
Mailing address5608 Tr 353
Millersburg, OH 44654
HoursMon–Fri 7:00 AM – 5:00 PMSat & Sun closed

Send a service request

Submitting opens your email app with a pre-filled message to atoz.hvac.office@gmail.com. Just press send.

Preferred contact

Prefer to talk? Call (330) 525-8575

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