🔥 Furnace Installation & Replacement in Greater Cincinnati
We do not sell furnaces on a carbon monoxide scare. We confirm the failure with a camera, size the replacement correctly, and quote it in writing before any work begins.
Signs It May Be Time to Replace
We do not push replacements. But when one or more of these is true, a new system usually costs less over time than pouring money into an old one.
Camera-Confirmed Cracked Heat Exchanger
A genuinely cracked heat exchanger is a carbon monoxide risk and a real reason to replace. But we require borescope camera evidence first. We never condemn a furnace on a verbal claim or surface rust alone.
Furnace Is 20+ Years Old
Most gas furnaces last 15 to 20 years, and a well-maintained unit can reach 25. As yours gets into that range, a major-part failure rarely makes economic sense against a modern high-efficiency unit.
80% AFUE and Rising Gas Bills
An old 80% AFUE furnace sends one of every five heating dollars up the flue. If yours is aging and your Columbia Gas bill keeps climbing, a 96%+ AFUE upgrade pays part of its own way in lower bills.
Furnace Installation & Replacement Cost in Cincinnati
Most gas furnace replacements in Greater Cincinnati fall in these ranges, installed. The final number depends on the efficiency you choose, the size of your home, and whether venting, gas line, or ductwork needs work, all itemized in your written quote before we order.
Standard 80% AFUE
A dependable single-stage 80% AFUE gas furnace. The budget-friendly choice for a like-for-like replacement where high-efficiency venting is not practical.
- 80% AFUE single-stage
- Manual J load calculation
- Combustion safety commissioning
- Permit and inspection included
High-Efficiency 96% AFUE
A condensing 96% AFUE furnace that keeps far more heat in the house and vents safely through PVC. Our most-recommended tier for comfort and lower gas bills.
- 96% AFUE condensing furnace
- Two-stage for even heat
- Columbia Gas rebate eligible
- PVC sidewall venting
Premium Modulating
A modulating, variable-speed 97 to 98% AFUE furnace for the most even temperatures, quietest operation, and lowest bills, the top choice for whole-home comfort.
- 97 to 98% AFUE modulating
- Variable-speed blower
- Highest rebate eligibility
- Quietest, most even heat
Replacing the furnace and AC together saves on shared labor and teardown. See our AC installation page. These are honest estimates, not bait. The written quote you sign is the price you pay: the only thing that can change it is a hidden condition we cannot see until the old system is out, which we always show you and price in writing first. We credit any prior $89 diagnostic toward your installation.
What a Proper Furnace Installation & Replacement Includes
A lowball quote usually skips the work that makes a system last. Here is what is always in ours.
Manual J Load Calculation
We size the furnace to your home's actual heat loss, not a rule of thumb. An oversized furnace short-cycles, wears out faster, and heats unevenly.
Correct Venting
A 90%+ condensing furnace must vent through PVC sidewall, not the old chimney. We install proper intake and exhaust venting rather than reusing an incompatible flue.
Condensate Drainage
High-efficiency furnaces produce acidic condensate that must drain correctly. We set up proper drainage and neutralization so it does not damage your equipment or floor.
Gas Line & Combustion Setup
We verify gas pressure and set combustion to the manufacturer's specification with a calibrated analyzer, not by eye. Correct combustion is safety and efficiency at once.
Permit & Inspection
We pull the permit and handle the township or city inspection. An unpermitted furnace install can void warranties and complicate a home sale.
Combustion Safety Commissioning
Before we leave, we measure flue-gas CO with a calibrated analyzer, confirm safe draft, verify temperature rise, and register your warranty. You get the readings in writing.
How Our Furnace Installation & Replacement Works
Free In-Home Assessment
We inspect your current furnace, venting, gas supply, and ductwork, then run a Manual J load calculation. If your existing furnace can be safely repaired instead, we will tell you.
Written, Itemized Quote
You get a clear written quote covering equipment, labor, venting, and any gas or duct work, with efficiency tiers and financing options side by side.
Professional Installation
Most furnace replacements finish in one day. We protect your floors, haul away the old unit, and leave the mechanical room clean.
Safety Commissioning & Warranty
We run a full combustion safety check, confirm temperature rise and draft, walk you through the thermostat, and register your warranty.
Financing & Ohio Rebates
We offer financing on approved credit so a new furnace does not have to be an all-at-once expense, useful when a system fails in the middle of winter. High-efficiency condensing furnaces frequently qualify for Columbia Gas of Ohio rebates, typically $300 to $500, and we handle the paperwork. We never use a carbon monoxide scare or a fake incentive to push a sale; the real savings come from rebates you qualify for and a lower gas bill month after month.
Repair or Replace? Our Decision Framework
A furnace replacement deserves more rigor than a technician's gut feeling. A 9-year-old 96% AFUE furnace with a failed inducer motor is almost always worth repairing: the part costs $300 to $600 and the furnace has years left. A 23-year-old 80% AFUE unit with a camera-confirmed cracked heat exchanger and a history of annual repairs is a different calculation. We evaluate five factors: age against expected lifespan (typically 15 to 20 years, sometimes more for well-kept units), repair cost as a percentage of replacement, current AFUE versus available 96 to 98% equipment and the resulting gas savings, any associated heat-pump refrigerant concerns, and repair frequency over the past three years. Above all, we never condemn a heat exchanger without borescope camera evidence: the cracked-heat-exchanger scare is the most abused tactic in this industry, and our salaried installers earn nothing extra for selling you a furnace.
What Our Furnace Installation & Replacement Covers
Renew Mechanical installs and replaces gas furnaces, heat pumps, and complete heating systems for homeowners across Greater Cincinnati and Northern Kentucky. Every installation starts with a Manual J load calculation, because an oversized furnace short-cycles, heats unevenly, and wears out early. When we install a 90%+ condensing furnace we install proper PVC intake and exhaust venting and correct condensate drainage rather than forcing modern equipment onto an incompatible old chimney, a shortcut that causes real failures in older Cincinnati homes. We set combustion to specification with a calibrated analyzer, commission every furnace with a measured flue-gas CO reading, pull the permit, and register the manufacturer warranty in your name. We install all major brands, source equipment directly from the manufacturer, and never sell a replacement on fear, if your furnace can be safely repaired, that is what we will recommend.
Equipment We Install
We install equipment sourced directly from the manufacturer, so your warranty stays valid and parts are supported.
Why Cincinnati's Climate Shapes Your Furnace Installation & Replacement
Cincinnati's heating climate is moderate by Midwestern standards (our design low is around 6°F), but the wide swing between January cold snaps and March warm spells stresses equipment and rewards a right-sized, efficient furnace. The bigger installation challenge here is the housing stock: converting an older 80% AFUE furnace to a 90%+ condensing unit requires new PVC venting and condensate drainage that many older Mt. Washington and Anderson Township homes were never built for. Done as a lazy equipment swap, that conversion causes callbacks; done as real field engineering, it delivers years of efficient, even heat. We handle the venting, drainage, and combustion setup that a proper high-efficiency conversion actually requires.
Furnace Installation & Replacement Service Areas
We install across Greater Cincinnati and Northern Kentucky: Anderson Township to Amelia, Mt. Washington to Milford.
Anderson Township encompasses distinct neighborhoods with different housing characteristics.
The core of Mt.
The original Newtown village, along Newtown Road near the historic commercial district, contains the oldest structures with the most complex retrofit requirements.
Downtown Milford and the historic district along Lila Avenue and Riverside Drive contain the oldest housing stock, where pre-1950 construction predominates and specialty retrofit approaches are most often needed.
The original Amelia community along US-125 near Ohio Pike contains the area's oldest housing stock, where mid-century homes may have original ductwork and aging equipment that benefits from comprehensive replacement planning.
The residential neighborhoods immediately north and east of Summit Park (including the streets between Reed Hartman Highway and Kenwood Road) represent Blue Ash's densest concentration of 1960s ranch homes where comprehensive system evaluations are most valuable before committing to equipment replacement.
The historic downtown area along Loveland-Madeira Road and near the Little Miami Scenic Trail trailhead contains the oldest housing stock, where Victorian-era construction and early 20th-century homes require the most careful HVAC assessment before any equipment commitment.
The neighborhoods along Kenwood Road between Camargo Road and Miami Avenue represent some of Madeira's oldest residential areas, where 1950s ranch homes are most common and comprehensive system evaluations most valuable before any equipment decisions.
The original Mariemont village core (the blocks surrounding Mariemont Square and the historic commercial center) contains the oldest and most architecturally significant homes, where specialty retrofit approaches are most consistently required.
The established subdivisions in Mason's southwest quadrant (the neighborhoods built in the 1990s along Western Row Road and south of Mason-Montgomery Road) represent the community's oldest residential stock, where first-generation equipment installations are now reaching end of life and comprehensive system evaluations are most valuable.
Read Before You Buy
How Much Does a New Gas Furnace Cost in Cincinnati?
A failing furnace usually leaves you freezing right when the temperature drops. We focus on fixing the real issue instead of just quoting you a brand new box.
Average Cost to Replace Your Whole HVAC System in Ohio
Replacing both your AC and furnace at once is a massive hit to the wallet. We stick to our Repairs First policy to make sure you aren't paying for equipment you don't need yet.
Related Services
Furnace Installation & Replacement FAQ
A standard 80% AFUE gas furnace typically runs $3,500 to $5,000 installed in Greater Cincinnati. A high-efficiency 96% AFUE condensing furnace runs $5,000 to $7,500, and a premium modulating 97 to 98% unit runs $7,500 to $10,000. The final price depends on your home's size and whether venting, gas line, or ductwork needs work, all itemized in your written quote before we order anything.
A like-for-like gas furnace replacement takes 4 to 6 hours in most Anderson Township or Milford homes. Converting from an 80% to a 90%+ AFUE unit (which requires new PVC venting and condensate drainage) or adding duct and electrical work can push it to 6 to 10 hours. We complete the work in a single visit whenever possible and leave your home warm before we go.
For most Greater Cincinnati homes, yes. A 96% AFUE furnace keeps roughly 16 cents of every heating dollar that an 80% unit sends up the flue. A household using around 800 therms a year saves roughly $80 to $120 annually at current Columbia Gas rates, and rebates shorten the payback further. High-efficiency units also vent through PVC sidewall, eliminating the chimney-deterioration problems common in older high-efficiency conversions here.
We size every furnace with a Manual J load calculation based on your home's heat loss (square footage, insulation, windows, and infiltration), not a rule of thumb. An oversized furnace blasts heat, satisfies the thermostat too fast, short-cycles, and leaves some rooms cold. Correct sizing is the difference between even comfort and a furnace that wears itself out.
Yes. We offer financing on approved credit, which matters most when a furnace fails in the middle of winter and replacement is not something you planned for. We present financing alongside your written quote so you can compare monthly cost against the efficiency tiers.
Often, yes. Columbia Gas of Ohio offers rebates for qualifying high-efficiency condensing furnaces, typically in the $300 to $500 range, and we handle the paperwork. We only quote rebates you actually qualify for.
Sometimes it saves money. The indoor AC coil sits on top of the furnace, so if both are near end of life, replacing them together avoids paying twice for overlapping labor and teardown. If your AC has good years left, we will say so and quote the furnace alone. See our AC installation page for details.
Maybe, but get proof first. A cracked heat exchanger is the single most exploited component in this industry because it triggers a carbon monoxide fear. We never take that claim on faith. We inspect the heat exchanger with a borescope camera and show you the actual crack before we ever discuss replacement. If it is intact, we tell you that, even when another company said otherwise.
We do, and it is included in the quoted price. We file the application, meet the inspector on site for the mechanical and combustion safety check, and hand you the closed-out paperwork at the end of the job. Keep it: an install with no permit record behind it can cost you a manufacturer warranty claim, and it is one of the first things a buyer's inspector asks about when you sell.
Yes, and we do it properly. A condensing furnace cannot reuse the old chimney flue. It needs PVC intake and exhaust venting through a sidewall plus correct condensate drainage. We field-engineer that conversion for your specific home rather than forcing modern equipment onto incompatible old venting, which is where lazy installs fail.
Ready for Furnace Installation & Replacement?
Free Quote. No Pressure.
Free in-home assessment and a written, itemized quote before any work starts. Correct Manual J sizing, factory-backed warranties, and salaried installers with zero commission. Financing available. Serving Hamilton, Clermont, and Warren Counties.