HVAC Services in Horsham, PA

Serving Horsham across the border into Montgomery County — Horsham is one of our fastest-growing service areas. Lots of newer construction with heat pumps and inverter-driven systems; we're factory-trained on the major brands and keep common parts stocked so we're not making you wait on a parts order.

Horsham's commercial corridor along Horsham Road and the newer residential developments mean we see modern HVAC equipment regularly — Daikin, Mitsubishi, Carrier, Trane, Lennox, Goodman. Variable-refrigerant systems, inverter heat pumps, high-SEER two-stage AC — we work on all of it. Older Horsham homes near Hatboro and Dresher get the same treatment as the newest builds.

HVAC services available in Horsham, PA

• 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
• 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, perfect for finished basements, additions, and sunrooms
• 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 Horsham 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 in Pennsylvania — paperwork available on request.
• Fair, honest quotes — low overhead means we can price service and equipment fairly.
• Same-day service is routine for Horsham — we're based in nearby Trevose.
• 5.0 stars across 11 Google reviews — real neighbors, real jobs, verifiable on Google.