Do you serve the newer Marysville neighborhoods?

Yes. We serve the whole city, from Uptown to Mill Valley, Green Pastures, Adena Pointe and the newest subdivisions, plus Paris and Dover townships around it.

My Marysville home was built in the late 1990s. Should I replace my furnace?

Not always. Many furnaces from that era still run well with good care, though most last 15 to 20 years. We'll inspect yours and give you a repair option and a replacement option, each with a price, so you can decide.

Can you help with an older home near Uptown?

Yes. Older homes often have mixed ductwork and rooms that are hard to heat or cool. We can repair what's there, improve airflow, or add a ductless mini-split for rooms the ducts don't reach.

My home has a heat pump, not a gas furnace. Do you work on those?

Yes. We repair, maintain and install heat pumps, including backup heat strips and dual-fuel setups.

How soon can you get here if I have no heat?

Tell us you have no heat when you call or book. No-heat calls get our soonest opening, and you'll get an arrival window you can count on.

Always On Time

Marysville HVAC Services

One Hour Heating & Air Conditioning® Serving Marysville

4.81

(204251 reviews)

Heating & Air Conditioning in Marysville, OH

Your Marysville Heating and Cooling Team

Samuel Culbertson founded Marysville along Mill Creek in 1819 and named it for his daughter, Mary. Two centuries later it's the Union County seat, and the 1883 courthouse still stands at the heart of Uptown. Around that core, the city keeps growing, with neighborhoods spreading along the US 33 corridor and hundreds of homes built since 2020.

One Hour Heating & Air Conditioning® of Delaware takes care of furnaces, heat pumps and air conditioners all over Marysville. We work on century-old houses near Uptown and on brand-new builds at the edge of town. We're locally owned, and our office is on Pittsburgh Drive in Delaware.

Our promise is simple: Always On Time…Or You Don't Pay A Dime!® We arrive in the window you pick, or the service call is free.

HVAC Services in Marysville

Furnace repair: Gas and electric furnaces: igniters, flame sensors, blowers and control boards.
Furnace replacement: Right-sized new furnaces when the old one is worn out.
Heat pump repair and installation: For all-electric homes and dual-fuel systems paired with a gas furnace.
AC repair: Warm air, frozen coils, failed capacitors and outdoor units that won't start.
AC installation and replacement: New central air matched to your home's size and ductwork.
Heating and AC tune-ups: Yearly checkups, with priority scheduling for club members.
Ductless mini-splits: Heating and cooling for additions, bonus rooms and older homes without ducts.
Humidifiers and indoor air quality: Whole-home humidifiers, air filtration and dehumidifiers.
Duct cleaning: Clears dust and debris, especially after a remodel.
Thermostats: Smart and programmable thermostats, installed and set up for you.

Heating and Cooling Homes in Marysville

Marysville's housing is young. Census estimates show about two-thirds of the city's homes were built in 1990 or later, and the median home dates to 1999. That's a lot of furnaces and air conditioners from the 1990s and 2000s reaching the end of their working life. Many homes are already on their second system.

The city has an older side, too. About one in nine Marysville homes was built before 1940, mostly in and around Uptown. Those houses often have ductwork that was added or patched over the years, so one floor may run warmer or cooler than the other.

Natural gas heats about 77 percent of homes in the city, by Census estimates. About one in five uses electric heat, which usually means a heat pump or an electric furnace. Outside the city limits, in the rest of the 43040 ZIP, about 16 percent of homes heat with propane. We repair and replace all of these systems.

Marysville Neighborhoods and Areas We Serve

Uptown Marysville and the historic district around the courthouse
Mill Valley
Green Pastures
Timberview
Scotts Farm
Adena Pointe
Homes along US 33, US 36, State Route 4 and State Route 31
Paris and Dover townships and the rest of ZIP codes 43040 and 43041

Marysville Local Insight

Marysville calls itself the Shaded City, and those trees are a gift on a July afternoon. They also drop leaves, seeds and twigs into outdoor AC units and heat pumps, which chokes airflow. Keep two feet of clear space around the outdoor unit and rinse the fins gently each spring. Also, whole subdivisions went up at once in the 1990s and 2000s, so their builder-grade systems tend to wear out around the same time. If your neighbors are replacing furnaces, a tune-up will show where yours stands so you can plan ahead.

Why Marysville Chooses One Hour Heating & Air Conditioning®

Always On Time…Or You Don't Pay A Dime!®: We arrive in the window you choose, or your service call is free.
StraightForward Pricing®: You see and approve the price before any work begins.
100% Satisfaction Guarantee: We guarantee our materials, labor and craftsmanship for up to two years from the date of service.
Licensed and Insured: Ohio License #51715.
Locally Owned: Our office is on Pittsburgh Drive in Delaware.
Financing Available: Options for larger repairs and new systems.
Club Membership: Members get annual tune-ups, priority scheduling and member discounts.

Seasonal HVAC Tips for Marysville

Book your furnace tune-up in early fall, before the first cold snap. Check the filter every month in winter and change it when it looks gray. If you have a heat pump, keep snow and ice off the outdoor unit, and keep rugs and furniture off floor vents. Winter air gets dry, so a whole-home humidifier can ease dry skin and static. In spring, clear the leaves from around the AC and schedule a cooling check before the first hot week.

Schedule HVAC Service in Marysville Today

Call One Hour Heating & Air Conditioning of Delaware at (740) 204-2530 or book online any time. Pick your arrival window, see your price before we start, and get your home comfortable again.

Learn more about our Delaware-based HVAC experts.

Book Now

HVAC Near Me In...

services the following communities:

Alexandria
Beechwood Trails
Bellepoint
Berlin Township
Broadway
Brown Township
Claibourne Township
Concord Township
Delaware
Delaware Township
Jersey Township
Johnstown
Kilbourne
Leonardsburg
Liberty Township
Norton
Oxford Township
Radnor Township
Scioto Township
St. Albans Township
Stratford
Taylor Township
Troy Township

We have a reputation for being punctual, friendly and knowledgable

4.81

(204251 reviews)

Read More Reviews

June Eaton

in the last week

Very pleased with this company and our technician, Joshua. Scheduling was efficient and fast, they came out the same afternoon that I called. After I had another company come out that morning and tell us they could not fix my furnace dehumidifier, Joshua had it fixed in a short time after his arrival. Pricing was very fair. This is my new HVAC provider!

Mary Petit

in the last week

Needed my boiler repaired, called OneHour H & C. Alex was on time and did any excellent job. I would highly recommend them.

David Carpenter

in the last week

Great guys great work .

Ed LaFave

in the last week

Glad to have called One Hour Heating and Air Conditioning in San Ramon. Fast and courteous with great pricing for our house. We were really pleased with their service.

Genevieve Fay

in the last week

Andrew was excellent in his detailed review in quoting out a new heating/AC system for our home. He asked what I was looking for and we went room by room reviewing what was in each room. He confirmed that the current layout was very good and the system we had was the correct in its ratings. He prepared our quote as I had asked, no pressure with any additional ons or upsells as I was clear in what we were looking to do. He went over the quote with me line by line asking if I had any questions. Andrew was very polite and professional throughout the whole process. Can’t say enough good things about the dealings I have had with these two gentlemen along with the young lady I talked to on the phone. If you’re on the fence- call these guys.

Andrew Yantek

in the last week

"Great experience with One Hour Air! They showed up right on time, replaced my thermostat, and did a thorough AC maintenance check. Their pricing was very affordable and honest and their technician James was extremely knowledgeable. He explained everything he was doing and made me feel completely comfortable. He broke everything down clearly and never talked down to me or made me feel stupid. Highly recommend!!!

Log out of my Gmail mom Bruh

in the last week

Glenn was very impressive. He was here for over 5 hours working very hard to find a solution. He also was very honest with me about the issues to our units and I appreciated that a lot. Highly recommend.

Jacob Neading

a week ago

I had a great experience with the HVAC technician who completed work at my home. He was very professional, polite, and provided great customer service from start to finish. The work was completed in a timely manner, and he brought such a positive attitude. Good vibes and quality service are always appreciated! I would definitely recommend him.

shameka lawing

a week ago

DeAndre Yarbrough, the service tech was knowledgeable, clear and concise in his explanations, honest about priorities (mega kudos on that front), pleasant and friendly in his demeanor. I, literally, have zero complaints. He was absolutely great. I felt very comfortable with his explanations and service on my system.

Michael R

a week ago

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