Furnace Installation & Replacement in West Chester, PA
Most furnace replacements in this area are decided in a basement, and the question that decides them is not the brand on the box. It is where the exhaust goes. A borough house with an original masonry chimney and a township house with a pair of plastic pipes through the rim joist are two different projects, even when the furnace being installed is identical.
We quote furnace installation and replacement from our West Chester office on Westtown Road, and installation estimates are free.
The chimney question nobody warns you about
Replace an older atmospheric furnace with a high-efficiency condensing unit and the furnace stops using the chimney. If a gas water heater shares that flue, it is now venting alone into a masonry chase sized for two appliances. The flue gases cool before they reach the top, condense inside the brick, and over a few winters that moisture damages the liner and the draft turns unreliable. The remedy is straightforward — relining to the correct size, or moving the water heater to a power-vented appliance — but it has to be planned before the furnace is ordered, not discovered afterwards.
Where a sidewall vent can legally terminate
Condensing furnaces vent through PVC out a wall, and that termination has required clearances from windows, doors, soffits, gas meters, and the property line. On the tighter borough lots that constraint is real and it sometimes decides the equipment. Terminations also have to be sited where snow, ice and mulch cannot block them, because a blocked intake or exhaust shuts the furnace down on its pressure switch — usually at the worst possible time.
Older houses usually need less furnace than they have
Many homes here have had insulation, air sealing and window work done since the existing furnace went in, and the original was frequently oversized to begin with. Carrying the same input rating forward gives you a machine that blasts to setpoint, shuts off, and leaves the rooms furthest from the equipment cold. We size from a load calculation on the house as it stands today, which in older properties routinely lands smaller than what is being replaced.
What a replacement quote includes
- ✓Heating load calculated for the current condition of the house, not copied from the old nameplate
- ✓Venting route, terminations and the effect on any other appliance sharing the chimney
- ✓Combustion air supply for the mechanical space, which changes with a tighter house
- ✓Condensate drainage and neutralizer, including a plan for any run at risk of freezing
- ✓Static pressure and return capacity on the existing duct, and any correction it needs
- ✓Gas line sizing, electrical, thermostat compatibility and the blower staging that matches your ducts
Matching the blower to the house
A two-stage or modulating furnace with a variable-speed blower runs long gentle cycles that even out the temperature between floors, and it is the right answer in a lot of houses. It is not free, and in a house with restrictive ductwork the fancier blower spends its life fighting static pressure it cannot overcome. We will tell you when the money is better spent on the duct than on the equipment. We install the major residential brands, Lennox, Carrier, Trane and Goodman among them, and the office answers 24 hours a day.
West Chester Furnace Installation — Questions We Get
Do I have to reline my chimney when I replace the furnace?
Only if something is still venting into it. When a condensing furnace takes its exhaust out through the wall and a gas water heater is left venting alone into a masonry flue sized for two appliances, the flue is now oversized for the load and condensation inside the chimney becomes a real problem. The fix is either a correctly sized liner or a water heater that vents on its own, and it should be priced with the furnace.
Is a 96 percent furnace worth it over an 80 percent?
Usually yes on fuel use, but the venting and condensate work that comes with it is part of the cost, and in some houses the vent simply cannot terminate where the clearances require. We price both honestly for your building rather than pushing the higher number as a default.
My new furnace should be at least as big as the old one, right?
Not necessarily, and in older homes it is frequently smaller. Insulation, air sealing and window replacement all reduce the heating load, and a lot of older equipment was oversized when it was installed. A furnace with too much output short cycles, which is noisier, less comfortable and harder on the equipment than a properly sized unit running longer.
How long will the installation take?
A straightforward changeout in an accessible basement is generally a day. Add chimney work, a vent route through finished space, gas line changes or duct modification and it can run into a second day. We tell you which at the estimate, and the estimate itself is free.
Can you do the installation in cold weather?
Yes, and a fair share of replacements happen exactly then because that is when systems fail. We plan the sequence so the house is without heat for as little of the day as possible, and where a replacement cannot be completed that day we discuss temporary heat with you up front.
Which areas does the West Chester office install in?
West Chester borough, Westtown, the Goshen townships, Exton, Lionville, Eagleview, Chester Springs, Downingtown and Thorndale, among others nearby. Our address is 105 Westtown Rd and calls are answered around the clock.
Who serves West Chester
West Chester calls are handled out of our West Chester office at 105 Westtown Rd #C, West Chester, PA 19382. Call (610) 424-6278 — we answer 24 hours a day.