8 HVAC Service Contractors in Islip, NY
Top-Rated HVAC Service Contractors in Islip
Karl Bros Handyman Services
“All 125 reviewers award 5 stars, with Manny and Gabe specifically named across multiple reviews for their professionalism, fair pricing, and project…”
Chimney Genie Liners & Chimney Repair
“All 51 reviews award 5 stars, with Tony mentioned by name in most reviews and Joel appearing in at least one detailed account. Reviewers repeatedly praise…”
All HVAC Service Contractors (8 total)
LNV Fuel Oil Corporation
“All seven published reviews award 5 stars, with recurring themes of reliability, competitive pricing, and…”
Preferred Plumbing & Heating
“Of 7 reviews, 1 reviewer awarded 5 stars praising the family's professionalism and accommodating service,…”
Proven HVAC Corp
“The single five-star review highlights competitive pricing, a thorough pre-installation consultation process,…”
HVAC Service Costs in Islip
General HVAC service pricing across maintenance, repair, and installation in Islip.
| Service | Low | Average | High |
|---|---|---|---|
Service call / diagnostic | $81 | $130 | $216 |
Routine tune-up (single system) | $76 | $135 | $216 |
Standard repair (avg) | $162 | $648 | $1,296 |
Major repair (compressor, heat exchanger) | $1,620 | $2,700 | $3,780 |
New system installation (mid-range) | $7,020 | $11,340 | $15,120 |
Full HVAC replacement AC + furnace combined | $12,517 | $14,504 | $15,228 |
Prices reflect continental metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
HVAC Service in Islip, NY: What to Expect
Islip's position on Long Island Sound brings a coastal climate that shapes real demand for HVAC Service in Islip. Summers push toward 85 F with humidity climbing to 67 percent, while winter lows settle around 25 F , milder than inland areas but still cold enough to run heating systems from November through March. This four-season pattern keeps both cooling and heating in regular rotation, which explains why fourteen contractors serve the area with an average rating of 4.3 stars from over five hundred reviews.
Those fourteen contractors operate within a market where service call costs range from $81 to $216, and a routine tune-up for a single system typically falls between $76 and $216. Standard repairs average $162 to $1,296 depending on the issue. New York does not require a statewide HVAC license, so local licensing requirements apply and contractors build their reputations through the quality of their work and word-of-mouth referrals within the community.
Karl Bros Handyman Services stands out with all 125 reviews awarding five stars, and reviewers consistently mention Manny and Gabe by name for their professionalism, fair pricing, and thorough project management. Chimney Genie Liners & Chimney Repair also draws praise, with Tony frequently named across reviews that highlight same-day response and transparent communication. These patterns reflect what Islip homeowners value most: technicians who show up when promised, explain the work clearly, and price it fairly.