Heat Pump Payback in Lake Grove, NY
Lake Grove, NY: the heat pump payback math
Lake Grove is a place where a heat pump genuinely costs more to operate than the alternative. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. The heat pump would cost about $128 more a year to run than the furnace it replaces, a premium with no payback. That's Lake Grove's own climate and rates talking, not a hedge or a caveat.
Not the city you meant?
This runs the same numbers for 3206 US cities, not just Lake Grove. Look one up here.
Lake Grove's weather, in the numbers that matter
4509 heating degree days pile up here every year, so Lake Grove has a real but manageable winter; the cooling side runs to 923 cooling degree days, where summers add a moderate cooling load. 17.1°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 10°F in the 2024 station record. Worked through the model, that's a seasonal COP of 3.11 on the cold-climate unit fit for this climate. Below the 25°F line where a standard machine starts leaning on resistance backup, Lake Grove sits firmly in cold-climate territory, so that's the class of unit priced here. Source: NOAA station Long Island Mac Arthur Airpor, 4.5 miles from Lake Grove, the closest one on record.
The yearly running costs in Lake Grove
Electricity use for heating alone comes out to about 3,671 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,303 a year. The gas furnace it replaces burns roughly 47 Mcf a year at $17.58 per Mcf here, for a running cost near $1,175 a year including the old AC (electricity here runs 29.22¢/kWh). Because the heat pump costs more to run here, the gap only widens with time: $7,414 behind after 15 years compared with replacing the furnace and AC like-for-like.
How sensitive Lake Grove's result is to prices
For the verdict in Lake Grove to flip, electricity would need to drop to about 25.3¢/kWh from 29.22¢, or gas climb past $20.30 per Mcf from $17.58. A utility offering a lower heat pump rate can change this. Until then, no quote price makes a heat pump pay back against gas in Lake Grove; the case for one here rests on comfort, cooling, or replacing electric heat instead.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Lake Grove, many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. The saving here runs about $2,383 a year, which recovers the extra $10,000 spent going electric in roughly 4.2 years.
Where Lake Grove ranks in this dataset
Lake Grove lands at position 1194 out of 3206 cities on heating severity (coldest is 1), and 2968 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.
Deciding what's next in Lake Grove, NY
Lake Grove, New York is home to about 11,109 people, and the figures above are the same ones a local HVAC contractor uses to size and quote a system, this site doesn't guess where a real quote would land, it just tells you whether it's worth asking for one. In Lake Grove, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Where Lake Grove's figure comes from
Every constant behind this page, the 3.11 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. At a 17.1°F design temperature, Lake Grove sits in cold-climate territory; the guide to that class of unit explains why.