Delaware HVAC leads
Delaware has no single dominant heating fuel: Census table B25117, 2020-2024 shows utility gas in 44.8% of owner-occupied homes, electricity in 31.9%, tank propane in 10.8% and fuel oil in 10.1%. HVAC is now onboarding at Summit Leads, so no HVAC leads are delivered in Delaware yet; buyers can join the HVAC list now.
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Delaware facts for HVAC lead buyers
| Fact | Value Source |
|---|---|
| Owner-occupied homes heated by utility gas | 44.8% (131,438 of 293,383 owner-occupied units; ACS 5-year 2020-2024, table B25117)Table B25117, Tenure by House Heating Fuel: Delaware (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Owner-occupied homes heated by electricity | 31.9% (93,445 units; ACS 5-year 2020-2024), 20th highest of the 50 statesTable B25117, Tenure by House Heating Fuel: Delaware (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Owner-occupied homes heated by bottled, tank or LP gas | 10.8% (31,599 units; ACS 5-year 2020-2024), 12th highest of the 50 statesTable B25117, Tenure by House Heating Fuel: Delaware (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Owner-occupied homes heated by fuel oil or kerosene | 10.1% (29,675 units; ACS 5-year 2020-2024), 10th highest of the 50 statesTable B25117, Tenure by House Heating Fuel: Delaware (ACS 5-Year 2020-2024) U.S. Census Bureau |
| All occupied homes heated by electricity | 37.9% of 402,038 occupied units, with 41.9% on utility gas (ACS 5-year 2020-2024, table B25040)Table B25040, House Heating Fuel: Delaware (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Heating degree days, 2025 | 4,559 (1991-2020 average 4,483)Climate at a Glance: Delaware heating degree days, January-December, 1895-2025 NOAA National Centers for Environmental Information |
| Cooling degree days, 2025 | 1,166 (1991-2020 average 1,141), 19th highest of the 48 states with a statewide seriesClimate at a Glance: Delaware cooling degree days, January-December, 1895-2025 NOAA National Centers for Environmental Information |
| Owner-occupied and renter-occupied homes | 293,383 owners and 108,655 renters among 402,038 occupied units (ACS 5-year 2020-2024)Table B25003, Tenure: Delaware (ACS 5-Year 2020-2024) U.S. Census Bureau |
| State license for HVACR services | Master HVACR or master HVACR restricted license from the board required to provide HVACR services, with exemptions for supervised workers and homeowners (24 Del. C. 1820, checked October 8, 2026)24 Del. C. chapter 18, subchapter III (License: Heating, Ventilation, Air Conditioning, and Refrigeration), sections 1820-1821 Delaware Code Online |
| Master HVACR licensee scope | Heating, ventilation, air conditioning, commercial hood systems, hydronic systems, refrigeration and gas piping (24 Del. C. 1802(11))24 Del. C. chapter 18, subchapter I (Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners), section 1802 Delaware Code Online |
| Master HVACR restricted license specialties | One of six: forced-air heating, hydronic heating, commercial hood systems, refrigeration, air-conditioning or gas piping (24 Del. C. 1802(12))24 Del. C. chapter 18, subchapter I (Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners), section 1802 Delaware Code Online |
| Refrigerant certification for license applicants | Certification at the appropriate level for handling chlorofluorocarbons by an EPA-approved testing organization (24 Del. C. 1821(a)(3))24 Del. C. chapter 18, subchapter III (License: Heating, Ventilation, Air Conditioning, and Refrigeration), sections 1820-1821 Delaware Code Online |
Last reviewed: October 8, 2026. A summary for education, not legal advice.
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How Delaware homes are heated
Four fuels each heat at least one owner home in ten in Delaware. In the Census Bureau’s table B25117 (ACS 5-year 2020-2024), utility gas leads with 131,438 of 293,383 owner-occupied homes (44.8%), followed by electricity with 93,445 (31.9%), tank propane with 31,599 (10.8%) and fuel oil or kerosene with 29,675 (10.1%). The oil share ranks tenth among the 50 states and the propane share twelfth.
| Heating fuel | Owner-occupied homes | Share | Source |
|---|---|---|---|
| Utility gas | 131,438 | 44.8% | ACS 2020-2024, B25117 |
| Electricity | 93,445 | 31.9% | ACS 2020-2024, B25117 |
| Bottled, tank or LP gas | 31,599 | 10.8% | ACS 2020-2024, B25117 |
| Fuel oil, kerosene, etc. | 29,675 | 10.1% | ACS 2020-2024, B25117 |
| Wood, coal, solar, other fuels and no fuel | 7,226 | 2.5% | ACS 2020-2024, B25117 |
Among all 402,038 occupied homes, renters included, table B25040 (2020-2024 ACS) shows 41.9% on utility gas and 37.9% on electricity.
This mix matters to a buyer because each fuel brings a different job: gas and propane furnaces, oil-fired furnaces and boilers, and heat pumps in electric homes. A Delaware crew that handles more than one fuel can work a wider set of homes. The shares describe the state’s housing; they are not a breakdown of HVAC requests.
Heating and cooling degree days in Delaware
Delaware’s 2025 weather ran close to its long-run averages. NOAA’s heating degree day series shows 4,559 for the year, a little above the 1991-2020 average of 4,483, and the cooling degree day series shows 1,166, against an average of 1,141. The cooling total placed 19th among the 48 states with a statewide series.
That is a mixed climate: heating degree days outnumber cooling degree days about four to one, but a 2025 cooling total above 1,100 in the NOAA NCEI series means air-conditioning repair and replacement are part of the work alongside furnaces and heat pumps.
How NCEI builds these numbers: daily mean temperatures are compared with a 65°F base, the differences are summed from January to December for the statewide series, and the 1991-2020 figure is the average of that series’ annual totals over those years.
Delaware HVAC contractor licensing
This section is general information, not legal advice. It summarizes official sources as of October 8, 2026; check the current text of each rule before relying on it.
Delaware licenses HVAC work at the state level through the Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, under 24 Del. C. chapter 18. Section 1820 says a person may not provide HVACR services, or hold out as qualified to, without a master HVACR or master HVACR restricted license, unless an exemption applies. Exemptions include apprentices and mechanics working under a supervising master, and homeowners working on their own home, except on gas piping.
- Master HVACR licensee (section 1802(11)): heating, ventilation, air conditioning, commercial hood systems, hydronic systems, refrigeration and gas piping.
- Master HVACR licensee restricted (section 1802(12)): one specialty only, from forced-air heating with ventilation and gas piping, hydronic heating with gas piping, commercial hood systems, refrigeration, air-conditioning or gas piping.
- Qualifications (section 1821): a journeyman certificate from an approved HVACR apprenticeship plus two years under a master, or seven years under a master plus an equivalency test, and a passing score on the board’s examination.
- Refrigerant certification (section 1821(a)(3)): applicants must be certified at the appropriate level for handling chlorofluorocarbons by a testing organization approved by the EPA.
That last point is a state licensing condition built on the federal technician rules in EPA Section 608. For a buyer, the difference between the full and restricted master licenses decides which jobs a contractor can take: an air-conditioning-only restricted license does not cover a furnace or gas line.
Delaware owners and renters for HVAC buyers
Owners decide on system replacements, and Delaware has a high owner share. The Census Bureau’s table B25003 counts 293,383 owner-occupied homes and 108,655 renter-occupied homes among 402,038 occupied units in the 2020-2024 ACS, so roughly 73 households in 100 own.
The age of Delaware’s housing and its energy code are on Delaware window replacement leads and are not repeated on this page.
Delaware home energy rebate programs
DNREC’s State Energy Office describes two federal programs on its Home Energy Rebate Programs page: the Home Efficiency Rebate Program and the Home Electrification and Appliance Rebate Program. As checked on October 8, 2026, the page says both are expected to launch once funding is received, and it lists heat pumps among the measures they are designed to cover. Until DNREC announces a launch, a Delaware buyer quoting heat pump work should treat these rebates as pending.
Delaware counties by owner-occupied homes
Delaware has three counties, all listed below with their owner-occupied homes and the share heated by utility gas and by electricity. Source: ACS 5-year 2020-2024, county tables B25003 and B25117. The figures describe housing only and say nothing about where leads come from.
| County | Owner-occupied homes | Heated by utility gas | Heated by electricity | Source |
|---|---|---|---|---|
| New Castle | 154,724 | 60.0% | 23.2% | ACS 2020-2024, B25003 and B25117 (county) |
| Sussex | 86,851 | 18.8% | 49.5% | ACS 2020-2024, B25003 and B25117 (county) |
| Kent | 51,808 | 43.0% | 28.2% | ACS 2020-2024, B25003 and B25117 (county) |
The three counties heat their homes very differently. In the same county data (2020-2024 ACS), New Castle is mainly gas, with 11.8% of owner homes still on fuel oil; Sussex is mainly electric, with 21.6% on tank propane and only 18.8% on utility gas; and Kent sits between them, with 13.8% on propane and 10.8% on oil.
Reading the Delaware numbers for HVAC coverage
Delaware is small, but the official figures show three different markets in three counties. Points for a buyer:
- North is gas and oil. New Castle holds over half of Delaware’s owner homes, with 60.0% on utility gas and 11.8% on fuel oil in the 2020-2024 ACS county data. Gas furnace work and oil furnace or boiler service both fit there.
- South is electric and propane. Sussex heats 49.5% of owner homes with electricity and 21.6% with propane, which points to heat pump and propane furnace crews rather than natural gas specialists (ACS 2020-2024, B25117).
- License scope matters. Under 24 Del. C. 1802, a restricted master license covers one specialty, so a buyer working with several Delaware contractors can match each job to the license that covers it.
None of this says how many leads any county produces. It restates the housing, climate and licensing facts above for planning.
What Delaware HVAC buyers filter on
Delaware HVAC buyers filterFilterA rule that decides which leads a buyer is offered, based on fields such as vertical, sub-type, state, ZIP code, homeownership or accident details. Glossary on the same kinds of fields as other home services buyers. Tied to this state’s facts:
- Project type: for example install, replace or repair, for heating or cooling. With four common heating fuels, the type of system a homeowner has varies more than in most states.
- Homeowner status: about 73% of occupied homes are owner-occupied; see the counts above (ACS 2020-2024, B25003).
- Timeframe: whether the homeowner wants work done now or is collecting quotes for later.
- ZIP code: buyers choose ZIP codes their crews reach; the county split between gas, electric and propane can guide that choice.
When HVAC opens, Delaware buyers will set these filters per campaign, down to the ZIP code, as on Summit’s other home services leads. Once HVAC opens, HVAC leads will be exclusive by default, with shared delivery on request. The full field list is on the sample HVAC lead.
Where buyers filter in Delaware
Northern Delaware is part of the Philadelphia metro area, and the rest of the state divides between the Dover metro area and the Seaford micropolitan area. Census Bureau July 1, 2025 estimates follow; Philadelphia is the whole multi-state metro area. Once HVAC opens, buyers will be able to set coverage on any ZIP code, inside these areas or outside them.
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD (whole metro area): 6,329,118 (July 1, 2025 estimate)
- Seaford (micropolitan area): 277,140 (July 1, 2025 estimate)
- Dover: 194,786 (July 1, 2025 estimate)
Source: Metropolitan and Micropolitan Statistical Area population estimates, Vintage 2025 (cbsa-est2025-alldata), U.S. Census Bureau.
Consent records for Delaware HVAC leads
When HVAC opens, each Delaware HVAC lead will carry the TCPATCPAThe Telephone Consumer Protection Act, the federal law that governs telemarketing calls and texts, autodialers, prerecorded voice messages and the Do Not Call Registry. Glossary consent record captured on the form. Delaware’s telemarketing provisions appear in the Delaware row of the state telemarketing laws table, and an overview of MVA and home improvement leads for the state is on leads in Delaware.
Delaware HVAC lead questions
What fuels heat Delaware owner-occupied homes?
Utility gas heats 44.8%, electricity 31.9%, tank propane 10.8% and fuel oil or kerosene 10.1% of owner-occupied homes, in the Census Bureau’s ACS 5-year estimates for 2020-2024 (table B25117).
Were Delaware’s 2025 degree days close to normal?
Yes. NOAA NCEI’s Climate at a Glance shows 4,559 heating degree days (1991-2020 average 4,483) and 1,166 cooling degree days (average 1,141) for Delaware in 2025.
What license does Delaware require for HVAC and refrigeration work?
A master HVACR license or a master HVACR restricted license from the Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners (24 Del. C. 1820). Applicants must also hold EPA-approved certification for handling chlorofluorocarbons. This is general information, not legal advice.
How is Sussex County, Delaware heated?
Mostly with electricity: 49.5% of owner-occupied homes, with 21.6% on tank propane and 18.8% on utility gas, in the Census Bureau’s ACS 5-year county data for 2020-2024 (table B25117).
Do Delaware HVAC buyers get to pick individual ZIP codes?
Not yet: HVAC is now onboarding. When it opens, buyers will set filters down to the ZIP code, as on Summit’s other home services leads, and leads will be exclusive by default.
Join the Delaware HVAC buyer list
HVAC is not live yet. Email us the Delaware ZIP codes you cover, your daily volume or caps and how you take delivery, and we will contact you when HVAC leads open.
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