Furnace Installation in Dayton, Ohio
Adding heating to your home — or building new? We’ll design a system that fits your space, your budget, and your comfort.
- Free In-Home Estimates
- GE Authorized Pro
- Financing Available
FREE
In-Home Estimate
Choosing the Right System
Every home is different. Here’s what we consider when designing a system that’s right for yours.
Your Home's Size & Layout
Square footage, ceiling height, number of rooms, and floor plan all shape what your system needs to do.
Your Comfort Goals
Heating only? Heating and cooling? Zoned comfort? We design around what you actually want to feel.
Your Ductwork Situation
Existing ducts, new ducts, or a ductless mini-split — the right approach depends on your home.
Your Budget
We show you options at different price points and help you balance upfront cost with long-term value.
Your Efficiency Preferences
Want the lowest bills possible? A balance of cost and savings? We'll match equipment to your priorities.
Proper Sizing From the Start
With a new installation, there’s no old unit to copy — which is exactly the opportunity to size it right. We do a full load calculation, not a guess.
Manual J load calculation — measuring your home, insulation, windows, and layout to size your system exactly right.
Too Big
- Short-cycles on and off constantly
- Temperature swings and wasted energy
- More wear and shorter lifespan
Too Small
- Runs constantly, can't keep up
- High bills from overworking
- Never quite gets comfortable
Sized Right
- Even heat in every room
- Steady, consistent temperatures
- Lower bills, longer life
Efficiency That Pays Off
Furnace efficiency is measured in AFUE — the percentage of fuel that becomes heat. An 80 AFUE furnace turns 80% of its gas into heat; a 96 AFUE furnace turns 96% into heat. We’ll show you the options and the real-world difference.
Lower Monthly Bills
A higher AFUE furnace uses less fuel to heat your home — so your gas bills stay lower all winter long.
Savings That Add Up
Over a 15–20 year system life, the energy savings from a high-efficiency furnace can offset much of the upfront cost difference.
Steadier Comfort
Modulating and variable-speed furnaces run at lower, steadier output — which means more even temperatures and fewer cold spots.
Less Fuel Used
Burning less gas is better for your wallet and the environment. A win-win you'll feel good about.
GE Equipment, Installed Right
We’re a GE Authorized HVAC Pro — one of the few in the Dayton region. That means factory-trained installations and equipment we genuinely trust. When you’re investing in a new furnace, the quality of the equipment and the installer both matter.
- Reliable, efficient equipment built to last
- Strong manufacturer warranties, backed by us
- Factory-trained, factory-authorized installations
- We install and service all major brands, too
The Installation Process
From first visit to first warm air, here’s what to expect.
Free Consultation
We visit your home, assess the space, and listen to what you're looking for — no obligation.
System Design
We size your system with a proper load calculation and design the right setup for your home.
Scheduling
We pick an installation day that works for you and confirm all the details ahead of time.
Installation Day
Our team arrives on time, protects your home, and installs your new system — clean and professional.
Testing & Setup
We test every component, verify performance, and make sure your new system runs perfectly.
Comfort Walk-Through
We show you how your new system and thermostat work, and answer any questions before we go.
What Whole-Home Comfort Feels Like
This is what you’re investing in — and it’s worth it.
Even Heat Everywhere
Consistent temperatures in every room — no more cold spots or drafty corners.
Quiet Operation
Modern furnaces run quietly. You'll feel the warmth before you hear it.
Better Humidity Control
A properly sized system keeps your home comfortable without drying it out excessively.
Lower Bills Than Window Units
A central furnace is far more efficient — and safer — than a house full of space heaters.
One Thermostat, Whole-Home Control
Set it once and forget it. No more adjusting units room by room.
A Cleaner, Clearer Home
No bulky space heaters to trip over, no fire risk. Just steady, whole-home comfort.
Financing That Works for You
A new furnace system is an investment. We offer flexible financing so you can spread the cost into manageable monthly payments.
Flexible Monthly Payments
Don't put off comfort because of the upfront cost. We'll walk you through financing options that fit your budget — often with low monthly payments.
No Cost, No Pressure
FREE ESTIMATE
Free
In-Home Estimate
No-cost, no-pressure assessment of your cooling needs and system options.
Furnace Installation Reviews
5.0 · Google Reviews
“We built a new home and Gem City installed the entire AC system. They helped us choose the right efficiency level for our budget, and the system is whisper-quiet. The whole process was smooth and professional.”
Mark and Jenny S.
Springboro, OH
“Our 1950s home never had central air. Gem City figured out how to run ducts without wrecking the house, and now we have whole-home cooling for the first time. No more window units — it’s amazing.”
Patricia L.
Oakwood, OH
“They did a proper load calculation for our new construction and sized the system perfectly. Even on the hottest days, the house stays perfectly cool and the bills are reasonable. Highly recommend.”
David R.
Beavercreek, OH
Related Heating Services
Furnace Repair
Already have a furnace? We fix it fast and honestly.
Furnace Replacement
Replacing an old system? We help you decide.
Furnace Maintenance
Protect your new system with tune-ups.
Emergency Heating Repair
Breakdowns don't wait — neither do we.
Furnace Installation Questions, Answered
How much does furnace installation cost?
It depends on your home, the system you choose, and whether ductwork is needed. That’s why we offer free in-home estimates — we’ll assess your space and give you upfront pricing with no obligation.
How long does a furnace installation take?
Most installations are completed in one to two days. Larger or more complex jobs — like running new ductwork — may take longer. We’ll give you a clear timeline upfront.
Can you add heating to a home without ductwork?
Yes. We can install traditional ducted systems, or we can install ductless mini-splits that don’t require ductwork at all. We’ll recommend the best approach for your home.
Do you install furnaces in new construction?
Absolutely. We work with homeowners and builders on new construction projects, designing and installing systems sized and built for the home from the ground up.
Can I replace my space heaters with central heat?
In most homes, yes. We’ll assess your home’s layout and ductwork situation to determine the best way to bring whole-home heating to your space.
What size furnace do I need for my home?
We do a proper load calculation (Manual J) that accounts for your home’s square footage, insulation, windows, and layout. We never guess — we size it right for your specific home.
What's the most efficient furnace?
Efficiency is measured in AFUE — the higher the rating, the more of your fuel becomes heat. We’ll show you options at different efficiency levels and explain the real-world savings for each.
Do you offer financing for new installations?
Yes. We offer flexible financing to spread the cost of a new system into manageable monthly payments. Ask us and we’ll walk you through what’s available.
Ready to Get Warm? Let's Plan It.
Free in-home estimate, honest advice, and a system designed for your home. Let’s bring whole-home comfort to your space.