HVAC Services in New Jersey
Trevose-based, serving central & south New Jersey — 23 years in business. Furnace, AC, boiler & water heater service across Burlington and Mercer counties and the surrounding NJ towns just across the Delaware River.
Diamond Dave's Mechanical Service LLC is based in Trevose, PA — minutes from the Delaware River crossings into New Jersey. We regularly service homes and businesses across Burlington County, Mercer County, and the surrounding NJ towns. Residential and commercial HVAC, boilers, water heaters, heat pumps, and 24/7 emergency service for New Jersey customers.
We serve New Jersey towns including: Trenton, Hamilton Township, Bordentown, Burlington, Mount Holly, Robbinsville, Willingboro, Hightstown, Pennington, Lawrenceville, Ewing, Hopewell, and the surrounding townships. No lead-generation middlemen, no out-of-state call centers — just Dave Dipaola and his family, dispatched directly, on the road in the familiar red-white-and-blue truck.
HVAC services available in New Jersey
- Gas furnace install & repair — new installs, replacements, annual tune-ups, emergency diagnostics
- Central air conditioning — install, replacement, service, refrigerant work, compressor repair
- Heat pumps — air-source heat pumps, cold-climate inverter systems, hybrid dual-fuel setups (common in NJ with electric utility rebates)
- Boilers & hot-water heat — gas, oil & steam boilers, circulators, expansion tanks, leak diagnosis
- Water heaters — tank and tankless, gas and electric, install and service
- Ductless mini-splits — single-zone and multi-zone, ideal for older NJ homes without existing ductwork
- Annual maintenance — spring AC tune-up, fall furnace tune-up, catch problems before they become emergencies
- 24/7 emergency service — Dave answers the phone day or night when heat or AC goes out
Why New Jersey residents choose Diamond Dave's
- 23 years in the trade — not a franchise, not a corporate chain. Dave Dipaola owns and operates the business.
- Fully licensed & insured — paperwork available on request.
- Fair, honest quotes — low overhead means we can price service and equipment fairly, even with the drive across the river.
- Same-day service is routine for nearby NJ towns — we're just across the Delaware.
- 5.0 stars across 11 Google reviews — real neighbors, real jobs, verifiable on Google.