Replacing an old furnace is one of the most important upgrades you can make for your family’s winter comfort, indoor safety, and monthly utility bills. At Don’s, our HVAC team dedicates 100% of its focus to residential furnace replacement and seasonal service calls rather than new construction projects. Focusing exclusively on existing homes allows us to give homeowners across Davisburg, Clarkston, Waterford, and the surrounding Oakland County communities fast scheduling, accurate heat load calculations, and attentive craftsmanship.
Too many contractors look at the BTU sticker on your old furnace and slide an identical box into its place. When managing a complete furnace installation in Metro Detroit, our technicians evaluate your home’s square footage, insulation, window efficiency, and existing ductwork before recommending a unit. You get clear, upfront options that fit your budget, backed by a full one-year workmanship guarantee.
A well-maintained forced-air gas furnace in Michigan typically lasts between 15 and 20 years. When your heating system struggles to keep up with sub-zero January cold snaps, watch for these signs that an upgrade and furnace replacement in Oakland County, MI is the smartest option:
A Cracked Heat Exchanger: Metal heat exchangers expand and contract thousands of times over their lifespan. If a crack develops, deadly carbon monoxide gas can leak into your home’s breathing air, requiring an immediate system replacement.
The 15-Year / 50% Guideline: When your furnace is over 15 years old and needs a major repair (like a failed blower motor, gas valve, or control board) that costs more than half the price of a new unit, putting that money toward a replacement saves you money over the long run.
Rising Winter Heating Bills: Older 80% AFUE furnaces lose 20 cents of every heating dollar right up the chimney flue. Upgrading with a modern high efficiency furnace installation turns almost all of your fuel directly into indoor heat.
Cold Spots and Uneven Heating: Rooms on the far end of your house or upstairs bedrooms that stay chilly while the main floor overheats often point to a tired single-stage blower or an improperly sized furnace.
Frequent Breakdowns and Noisy Operation: Needing multiple winter service calls or hearing loud banging, rattling, or screeching noises every time the heat kicks on indicates that major internal parts are wearing out.
Picking out a new heating system comes down to fuel efficiency (measured in AFUE), heating capacity (measured in BTUs), and blower technology. We help you compare options that make practical sense for your house:
Standard vs. High-Efficiency (AFUE Ratings): An 80% AFUE furnace vents exhaust through an existing metal chimney or B-vent, making it a straightforward swap in certain older homes. Modern high efficiency furnace installation projects utilize 96%+ AFUE condensing units with a secondary heat exchanger, venting safely out the side of your house using PVC pipes to significantly lower your monthly heating bills.
Single-Stage, Two-Stage, and Modulating Heat: Single-stage furnaces run at 100% capacity whenever they turn on. Two-stage and modulating furnaces run at lower, quieter settings during mild fall and spring days, ramping up to full power only during deep winter freezes for much steadier indoor temperatures.
Variable-Speed ECM Blower Motors: Pairing your unit with a variable-speed blower gently circulates warm air throughout your home, improves summer air conditioning efficiency, and uses a fraction of the electricity required by older fan motors.
Installing a modern heating system requires safe, code-compliant electrical work alongside gas piping and sheet metal fabrication. New variable-speed blowers, smart thermostats, condensate pumps, and electronic air cleaners all depend on a clean, dedicated electrical supply and proper grounding.
Because Don’s has operated as a licensed, full-service electrical contractor since 1989, you get both trades handled by one trusted local team. If your new furnace replacement in Oakland County, MI requires a dedicated 15-amp or 20-amp circuit, a new emergency shutoff switch, updated thermostat wiring, or whole-home surge protection to shield your furnace’s sensitive circuit board from power grid spikes, we complete the work on the spot without hiring outside subcontractors.
We treat your home with care and keep your furnace installation in Metro Detroit organized and stress-free:
Workspace Protection & Safety Shutoff: Our crew arrives on schedule, lays down protective floor runners from your door to the utility room, and safely shuts off the gas supply and electrical power.
Disconnect & Haul-Away: We disconnect the sheet metal plenum, gas line, flue venting, and wiring before removing your old furnace for proper recycling.
Cabinet Positioning & Sheet Metal Fitment: We level your new furnace in place and custom-fit the sheet metal transitions to seal air leaks between the unit and your existing ductwork.
Venting, Gas & Condensate Hookups: We install code-compliant PVC intake and exhaust venting (for high-efficiency units), connect the gas line with a sediment trap, and route clean condensate drain lines.
Electrical & Thermostat Wiring: We wire the high-voltage power supply, install a new service disconnect switch, and connect your low-voltage thermostat controls.
Combustion Testing, Commissioning & Cleanup: We test for gas leaks, dial in the manifold gas pressure, verify the temperature rise across the heat exchanger, sweep up our work area, and walk you through your new heating system and warranty registration.
Dispatched right out of our headquarters at 10891 Dixie Highway in Davisburg, our team replaces and installs gas furnaces, electric furnaces, heat pumps, and whole-home humidifiers throughout Oakland County and nearby communities. When you need dependable furnace replacement in Oakland County, MI, we are here to help:
Upgrade your home’s winter warmth and safety with a properly sized, high-efficiency heating system installed by licensed mechanical and electrical pros serving our community since 1989. When it is time for dependable furnace replacement in Oakland County, MI, Don’s delivers upfront pricing and craftsmanship you can count on.
A standard residential furnace replacement takes between 4 and 8 hours. Our team removes your old furnace, installs the new unit, updates the venting and electrical connections, and tests the system so you have reliable heat before we leave that same afternoon.
Replacing both systems together is often the most cost-effective route if your air conditioner is already over 10 to 12 years old. Because your indoor AC evaporator coil sits directly on top of the furnace and shares the blower motor, planning an AC upgrade during your furnace replacement in Oakland County, MI saves on labor costs, boosts overall seasonal efficiency, and syncs up your equipment warranties.
Equipment manufacturers require annual professional maintenance to keep your parts warranty in good standing. We offer seasonal cleaning checks to inspect and maintain all of your heating and cooling elements each year.
Yes, we offer flexible financing plans on every high efficiency furnace installation to fit your monthly budget, along with a 5% Military Discount and Senior Discounts. Many high-efficiency units also qualify for utility rebates through DTE Energy or Consumers Energy, plus federal energy tax credits, and we are happy to help you select qualifying equipment.
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