Furnace Installation in Manhattan, NY
A new furnace here will run from October through April every year. Tell us about the house, and a licensed contractor who covers New York County will get in touch.
Tell us about the job
It takes about a minute.
What a Manhattan winter asks of a new furnace
Your furnace has to carry the house from October through April, seven months of the year. On the coldest nights it's working against a low that averages 28°F, and it does that on and off, every night, for most of the winter.
Almost half of Manhattan homes heat with gas, and any non-weatherized gas furnace built since November 2015 has to hit at least 80 percent AFUE by federal rule. That's the floor. A new furnace sized and installed right for this climate is what keeps the house warm on the nights that actually test it.
- 7 months
- October through April, your furnace is on duty
- 28°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 $100 a year to run in New York County compared with a gas furnace.
Estimates for a typical New York 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 is no single answer without a load calculation done on your actual house. A contractor measures your square footage, your windows, your insulation, and your ceiling height, then runs a Manual J calculation to find the right size. Guessing at size based on your old furnace or a rule of thumb usually gets it wrong. Too big and the furnace short cycles, wearing out its parts faster. Too small and it runs constantly through the cold nights and still falls behind. With winter lows here averaging 28°F, getting this number right matters.
- How do I know it's time to replace my furnace?
- Age is the first thing to check, and if your furnace is old enough that repairs are becoming frequent, replacement is worth weighing seriously. Watch for rising repair frequency, uneven heat between rooms, and a jump in your gas bill with no other explanation. If your furnace is a non-weatherized gas model built on or after November 19, 2015, it's required to run at 80 percent AFUE or higher, so an older unit under that mark is losing more heat than a current one would. Homes here need heat from October through April, so a failure in the middle of that stretch is the situation you want to plan ahead of, not react to.
- Is a high-efficiency furnace worth it?
- It depends on how much heat your house actually needs and how long you plan to stay in it. A high-efficiency furnace burns less gas to produce the same heat as a standard 80 percent AFUE unit. With about 7 months a year of heating demand here and winter nights averaging 28°F, that furnace runs a lot, so the efficiency difference adds up over a season more than it would somewhere milder. A contractor can walk through the actual models and pricing for your house and tell you what the difference looks like for your situation.