
No heat or no hot water, a burner that locks out, soot or an oil smell. Diagnosis and repair for oil and gas boilers and oil burners.

Furnace running but blowing cold, short cycling or not starting at all. Repairs for oil, gas and electric furnaces.

Mini-split not heating in the cold, dripping water, blinking lights or a musty smell. Repair, service and deep cleaning.
Start here
Main services
Pick the one closest to your problem. Not sure? Call and describe what the system is doing.

​Rooftop and package units, commercial boilers and preventive maintenance for Long Island businesses. Call for a quote.

Heat or A/C for your home, any time, any season. A full evaluation and honest recommendations, with no pressure. Flat $99 per system, with no extra charge for tune-up time. Parts and repairs only with your approval. For systems that are running.

A2L Heat Pumps
Cold-climate heat pumps with the new lower-GWP A2L refrigerants. Add one to your oil heat and burn less oil.
EQUIPMENT WE WORK ON
SERVICE · REPAIR · INSTALLATION
The systems found in Long Island homes and buildings.
HEATING
Boilers (oil & gas)
Oil burners
Furnaces
Combi / wall-hung boilers
Oil, gas, electric hot water
Dual fuel / hybrid heat
COOLING & DUCTLESS
Ductless mini-splits
Central air
Heat pumps & A2L equipment
Rooftop & package units
Dehumidification
AIR & WATER
Indoor coil deep-cleaning
Calculated home balancing
Air & water filtration
Humidifiers
Domestic water tanks

Indoor Coil Deep-Cleaning
Dirty coils collect dust and growth that cut efficiency and affect indoor air. A professional cleaning restores airflow and performance.

Calculated Home Balancing
We measure and adjust airflow to even out hot and cold rooms and improve efficiency.

Installations & Replacements
When repair no longer makes sense, we install high-efficiency heating, cooling and mini-split systems, and give you honest options.
Free estimates on new installs and replacements.
Also from Peak
MAINTENANCE & UPGRADES
Call to book
Talk to Peak
Call to book service. Booking, appointments and payment are handled by phone and invoice.
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​No online booking and no online payment. You talk to a person, set a visit time together, and get an invoice after the work.
HOW IT WORKS
Tell us what your system is doing.
SET A TIME BY PHONE
We agree on a visit time with you.
DIAGNOSE & FIX
We explain what we found and do the work you approve.
INVOICE AFTER THE WORK
No payment up front.
