Newark / Denville
Denville has 17,205 residents (give or take 51) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=060XX00US3402717650, checked 2026-10-19), about 1,435 people per square mile.
Denville is about 20 miles from the Census center point for Newark in a straight line and covers 11.989 square miles of land (Census 2024 Gazetteer internal points and land area, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/, checked 2026-10-19).
The quote form takes a ZIP code; for Denville that is 07834 (Census 2020 ZCTA to county subdivision and ZCTA to place relationship files, ZIP areas at least 20% inside the town, https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/tab20_zcta520_cousub20_natl.txt and https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/tab20_zcta520_place20_natl.txt, checked 2026-10-19).
Of the 6,174 occupied homes in Denville, 68% heat with natural gas, 21% with heating oil, 8% with electricity and 3% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=060XX00US3402717650, checked 2026-10-19).
Gas leads in Denville at 68%, but 24% of homes still burn delivered oil or propane, and those 1,482 or so homes are where a heat pump pays back fastest.
Denville has 7 points more oil heat than Morris County as a whole, where 14% of homes burn oil, and 4 points less electric heat than the county's 12% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US34027, checked 2026-10-19).
Denville has 6,577 housing units, 20% built before 1940 and 67% before 1980, with 9% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US3402717650, checked 2026-10-19).
Denville has 8 points more pre-1940 homes than Morris County as a whole (12%) and 5 points fewer homes built after 2000 than the county's 14% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US34027, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
The median Denville home was built in 1964 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=060XX00US3402717650, checked 2026-10-19) and the median home has 7 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=060XX00US3402717650, checked 2026-10-19).
77% of Denville homes are single-family detached, 1% are in two- to four-unit buildings and 13% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=060XX00US3402717650, checked 2026-10-19).
With 77% detached houses and 1% in small multi-family buildings, a Denville quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 12% of Denville homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US3402717650, checked 2026-10-19), the landlord signs the quote in many of them.
Denville has 12 points more detached houses than Morris County overall (65%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US34027, checked 2026-10-19).
Only 12% of Denville homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US3402717650, checked 2026-10-19), so nearly every quote here is the resident talking to the installer directly, and the rebate goes to the person living in the house.
67% of Denville homes were built before 1980 and only 9% in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US3402717650, checked 2026-10-19), so most of the stock predates modern insulation codes; the installer's heat-loss calculation, not a square-footage rule, decides the tonnage.
No electric utility is on file for Denville on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
JCP&L Clean Comfort (residential building decarbonization), run by JCP&L, is a live program for New Jersey addresses and covers qualifying equipment at $7,500 per system (registry row 8 verified 2026-10-15, https://www.neifund.org/wp-content/uploads/2026/04/0925_JCPL_Res_Bldg-Decarb_5860532_FRM_Rebate-Application_2025.pdf, checked 2026-10-16); confirm eligibility for the Denville address before counting it. With 8% of Denville homes already on electric heat and 92% on gas, oil or propane, the row that applies depends on the name on the electric bill and the fuel coming out.
Median household income in Denville is $160,817 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=060XX00US3402717650, checked 2026-10-19); many state and utility heat pump rebate programs set higher incentive tiers for income-qualifying households, so the household income on the application, not the town median, decides which level applies.
Heating design temperature: 6F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Morris County row, 99% heating, PDF pages 81 to 82 of 141 (Revised 11/11/2020), https://www.energystar.gov/sites/default/files/Design%20Temperature%20Limit%20Reference%20Guide%20(2019%20Ed)%20-%20ENERGY%20STAR%20Single-Family%20New%20Homes_Rev11.pdf, fetched 2026-10-19, 99%.
That 6F figure is the Morris County cold-day number a Denville heat pump is sized against, so ask the installer to show the system's heating output at 6F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 68% of Denville on gas and 8% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Denville home has 7 rooms and was built around 1964, and the count of heads and the tonnage follow the rooms and the insulation, not the square footage.
The form on this page is the follow-up for Denville. The public number is the number the contractor quotes from.
No local contractor is named on this door for Denville yet. A request from this page goes to the first licensed shop that takes the door.