Furnace Installation in Troy, NY
A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers Rensselaer County will get in touch.
Tell us about the job
It takes about a minute.
Eight months of heat, down to 17 degrees
Troy homes need the furnace running from October through May. That's eight months of the year, with winter nights averaging 17°F. A new furnace has to hold a house warm through that, night after night, most of the year.
Power doesn't always stay on through a storm. Rensselaer County has seen 38 winter storms and 301 damaging wind events over the past ten years, and statewide, 11% of households went at least a day without power in 2024. A furnace put in right starts back up on its own once power returns, no relighting or resetting needed. Any non-weatherized gas furnace built new also has to meet 80.0 percent AFUE by federal rule, so that part of the decision is already made. What's left is sizing it to a season that runs eight months long.
- 8 months
- October through May, your furnace is on duty
- 17°F
- the average winter night it heats against
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
A high-efficiency gas furnace would save about $160 a year to run in Rensselaer County compared with a gas furnace.
Estimates for a typical Rensselaer County home, from EIA household energy data, New York fuel prices and NOAA climate normals. Your home will differ.
- What size furnace does my house need?
- There's no single number that works for every house. It depends on your square footage, your insulation, your windows, your ceiling height, and how much sun the house gets. A contractor works this out with a load calculation, not a chart based on square footage alone. With winter lows averaging 17°F here, getting this right matters more than it would somewhere milder. Too small and it runs constantly without catching up. Too large and it short cycles, heating the house in bursts and wearing itself out faster.
- How do I know it's time to replace my furnace?
- Age is one thing to look at, along with how the furnace has been running. Homes here need heat from October through May, 8 months a year, so a furnace works hard for most of the year, not just a few cold weeks. If yours is calling for repairs more than once a season, or the repairs keep getting worse, replacement usually makes more sense than patching it again. Uneven heat between rooms, a furnace that runs longer to hit the same temperature, or a yellow flame instead of blue are also signs to have it looked at. A contractor can tell you whether what you're seeing points to a repair or the end of the unit's life.
- Is a high-efficiency furnace worth it?
- It depends on how much you heat and what you're comparing it against. Every non-weatherized gas furnace made since November 2015 has to reach at least 80 percent AFUE, so even a standard model today isn't wasteful. A high-efficiency furnace sends less heat out the flue and more into the house than that. With heat needed here 8 months a year, October through May, that difference shows up more than it would somewhere with a short winter. A contractor can walk you through the actual models and what each one means for your house.