About 35%
How much less fuel a 95% furnace burns than a 1980s-era 60% unit, for the same heat.
Services

Furnace Installation & Replacement
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Heating bills climbing every winter? An aging furnace is often why, since one past 15 years burns more fuel for the same heat. KO HVAC handles gas and oil furnace installation and replacement in Kingston, so next winter costs less and runs quieter.
Valley towns like Kingston and Wilkes-Barre mostly have natural gas at the street. On back roads and in parts of the Back Mountain, oil or propane is often the only option. So we price the furnace that fits your fuel, plus the cost of switching if gas reaches your road.

About 35%
How much less fuel a 95% furnace burns than a 1980s-era 60% unit, for the same heat.
Up to 98%
The share of gas that top high-efficiency furnaces turn into heat for your home.
83%
The minimum efficiency federal rules allow for a new oil furnace.
About 80% of the time
How often a two-stage furnace runs on its quieter, lower setting through a typical winter.

A furnace usually warns you well before it quits for good. Some clues show up on the bill, and others show up in how the house feels. These six tend to point toward a replacement rather than another repair.
Most gas and oil furnaces last somewhere around 15 to 20 years. Past that point, efficiency slips and replacement parts get harder to find. Pricing a new furnace early lets you shop on your own schedule.
One year it's the igniter, the next it's the blower motor, and each visit costs more. When a single repair approaches half the price of a new furnace, replacement usually wins. We'll show you both numbers side by side.
The living room feels fine while the back bedroom stays chilly all winter. An older single-speed furnace blasts hot air, then shuts off, leaving cold spots between cycles. A newer two-stage or variable-speed model runs longer and gentler, so rooms even out.
The heat exchanger is the part that keeps combustion gases out of the air you breathe. If a technician finds a crack, the furnace shouldn't run, since carbon monoxide can leak through. On an older unit, replacement is almost always the safe answer.
A smoky smell, soot near the burner, or a small bang at start-up means the oil isn't burning cleanly. That wastes fuel and can coat the inside of your ductwork over time. Past a certain age, a new oil furnace or a fuel switch makes more sense than another tune-up.
A bang as the burners light, a cabinet rattle, or a whining blower all signal wear. Some are simple fixes, but on an older furnace they often arrive together. That combination usually means the system is near the end of its life.

A new gas furnace typically runs about $4,500 to $8,500, and high-efficiency models reach about $12,000. Oil furnace replacement typically runs about $3,000 to $10,000. The fuel, size, efficiency, venting, and any ductwork or chimney liner work move the price.
KO HVAC sees the house in person first, so your written quote already includes any liner or venting work. Nothing gets ordered until you approve it. New installs can qualify for 0% financing for 36 months, with approved credit.

A high-efficiency furnace saves the most in homes that heat hard all winter. For a small house or a tight budget, a standard model can be the smarter buy. We'll show you the yearly fuel difference so the choice is easy to make.
| Standard gas furnace | High-efficiency gas furnace | Oil furnace | |
|---|---|---|---|
| Fuel turned into heat | About 80% | 95% or more | About 83 to 87% |
| Venting | The existing chimney | A new PVC pipe through a wall | The chimney, often with a liner |
| Upfront cost | Lowest | Higher, with lower fuel bills | Varies with the burner and tank |
| Best fit | Mild use or a tight budget | Homes that heat hard all winter | Homes without gas at the street |
| Coverage when we install | 10 years on Carrier parts | 10 years on Carrier parts | Varies by brand |

We look at your insulation, windows, square footage, and ductwork before recommending a size. An oversized furnace turns on and off too often, while an undersized one runs nonstop on cold nights. The right size is what makes the house warm and the bill lower.
We check the flue, the chimney, and every gas or oil connection as part of the install. Then we run a combustion test to confirm the furnace burns cleanly. You get a safe system, not just a new box in the basement.
If gas reaches your street, we'll price a switch alongside a new oil or propane furnace. You see both paths in writing, with 0% financing for 36 months on either. Then you pick the one that fits your home and budget.
Each step is planned so your home is without heat for as little time as possible.
Step 1
We Size Up the House
Book by phone or online. We look at your current furnace, ductwork, venting, and fuel supply, then measure what the house needs.
Step 2
Your Written Quote, Your Decision
You get a written quote with each option, its efficiency, and the financing. Take your time, since nothing gets ordered until you say yes.
Step 3
Your Upgrade Gets Installed
We remove the old unit, set the new one, and connect the fuel line, venting, and ductwork. Then we seal every joint and clean up.
Step 4
A Combustion Test Before We Go
We fire up the furnace, test for carbon monoxide, and check airflow at the vents. Before we leave, you'll know how to use the thermostat and change the filter.

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Your call reaches a person 24 hours a day, and from 8 to 5 the office books the earliest opening. A repair can often carry you until the new furnace goes in. After hours, maintenance plan members can get emergency repairs at an after-hours rate.
Close doors to unused rooms, and draw the curtains once the sun goes down. Let a faucet on an outside wall drip slowly on the coldest nights.
On an oil furnace, press the red reset button once at most. Pressing it again can flood the burner with oil, which makes the next start-up dangerous.
Working from our base in Kingston, our technicians install furnaces in the towns below and in homes across Luzerne, Lackawanna, and Wyoming Counties. Gas or oil, every job gets the same in-home visit, written quote, and combustion test.
If your town is missing, it likely just didn't fit on the list, so give us a call.
Luzerne County
Lackawanna County
Wyoming County

The technician Lenny they sent out was extremely professional, knowledgeable and clean. He assess the situation, determined tge issue got it fixed in no time. I highly recommend them
Anthony J.
Great service on our home’s system! The technician found a failing capacitor and replaced it same day. I appreciated the thorough troubleshooting and clear explanation of the repair. Very happy with the work and would definitely recommend them!
Jason R.
The man was excellent, he checked the whole system gave me advice and wasted no time , i would recommend your comp any to anyone, any time i need a tech i I’m calling you guys TY
Thomas H.
KO HVAC did a great job changing my house from electric heat to natural gas forced hot air with AC. Cody and his team were wonderful to work with. Highly recommended.
Aaron H.
It was a pleasure to work with KO hvac. From the moment of making the initial call and getting set up, to the day of service it was a very smooth process. The communication was on point which is always greatly appreciated. Thanks Len!
Steven S.
Caleb was punctual and very professional and knowledgeable. Thanks!
Matt B.
Great service. Will definitely have them do all my hvac needs.
Mary N.
Caleb was professional & knowledgeable of the issues I had with my furnace.
Ray B.
This is an extremely professional group who does excellent work. They replaced our entire HVAC system and later added additional duct work. Incredibly smooth process from start to finish. Communication was excellent. Their crew was on time, professional and courteous. Highly recommend.
Ed B.
Steve and Caleb both very knowledgeable and good to deal with. Had an issue finding a leak in the system and they were able to find the problem. HIGHLY recommend.
Karen N.
It depends on the fuel, the size, the efficiency, and how much venting or ductwork changes. KO HVAC quotes every furnace replacement in writing after an in-home visit. New installs can qualify for 0% financing for 36 months, with approved credit.
Square footage is a starting point, but insulation, windows, and ductwork change the answer. An oversized furnace wastes fuel and runs in short bursts, while an undersized one can't keep up. We size it during the in-home visit, so the number isn't a guess.
It pays off fastest in homes that run the heat hard all winter. A 95% furnace burns noticeably less gas than an 80% model for the same warmth. We'll show you the yearly fuel difference, so you can decide whether it's worth the higher upfront price.
Sometimes. When a high-efficiency furnace moves off the chimney, the water heater left behind may need a liner. Oil furnaces often need one too. We check the chimney during the estimate and include a liner in the quote if it's needed.
If the AC is over 10 years old, it's worth pricing both at once. The furnace blower and the AC's indoor coil work together, and matching them improves airflow and efficiency. Replacing both in one visit can also save on labor.
Yes, and winter is when many replacements happen. If the old furnace can be repaired to hold on for a few weeks, you can plan the new one without rushing. Either way, installation is scheduled to keep the house without heat for as little time as possible.
Carrier gas furnaces we install carry 10 years of parts coverage. Oil furnace coverage depends on the brand and model. We explain your furnace's terms, and what keeps them active, before the install is finished.