Business Details
32 Years
experience
Emergency
services
Expert HVAC Services & Oil Delivery on Long Island
Established in 1994, Mac Heating Long Island is a family-owned business with over 25 years of experience serving Nassau and Suffolk counties on Long Island. We specialize in oil delivery, heating system installation and repair, and air conditioning services, prioritizing reliability, competitive pricing, and personalized customer care. Our team treats every client like family, offering free estimates, emergency services, and flexible options like COD oil delivery and seasonal contracts. With certified technicians and a commitment to stress-free solutions, we ensure homes and businesses remain comfortable year-round. 
Services
Oil Delivery
Heating Repair
AC Installation
Emergency Repairs
Oil Contracts
Boiler Installation
Mini-Splits
Radiant Heating
Pool Heaters
Details
- Year established: 1994
Highlights and features
- Over 25 years of experience serving Long Island
- Family-owned business with personalized service
- Competitive pricing on oil delivery and contracts
- 24/7 emergency repair availability
- Free estimates for installations and repairs
What people say
Saved my business
Always reliable
Honest and fair pricing
Services
Oil Delivery
We provide reliable oil delivery services for residential and commercial properties across Long Island. Options include COD spot pricing and seasonal contracts to suit budget needs. Our prompt delivery ensures uninterrupted heating during winter months.
Heating Repair
Our certified technicians offer emergency and routine heating system repairs for oil and gas boilers, baseboard heaters, and radiant systems. Quick response times minimize downtime during cold weather.
AC Installation
We install energy-efficient air conditioning units and mini-split systems for homes and businesses. Free estimates include system sizing and SEER rating recommendations to optimize comfort and efficiency.
Emergency Repairs
Available 24 hours a day, our emergency repair team responds rapidly to heating and cooling failures. Most calls receive same-day service to restore comfort during extreme weather conditions.
Oil Contracts
Lock in competitive rates with our annual oil delivery contracts. Customers benefit from budget predictability and priority delivery scheduling during peak winter demand periods.
People
Bill Maclay
Owner
Co-founder with over 25 years in HVAC, Bill oversees operations and client relations. He ensures every customer receives personalized solutions within their budget while maintaining service quality.
Donna Maclay
Owner
Co-founder Donna manages administrative operations and client satisfaction. Her focus on transparent communication and fair pricing has built lasting relationships with Long Island residents and businesses.
Ryan
Technician
Certified HVAC technician with expertise in oil burner and AC repairs. Ryan holds a CDL with hazmat certification for safe commercial oil delivery and system maintenance.
Justin
Technician
Licensed technician specializing in residential heating installations. Justin graduated from Wilson Tech and ensures all systems meet safety standards during new installations and upgrades.
Linda
Office Manager
Handles billing, scheduling, and customer inquiries. Linda ensures smooth communication between clients and technicians while managing daily office operations efficiently.
Questions
What areas do you service?
We serve all of Nassau and Suffolk counties on Long Island, including Syosset, Jericho, Woodbury, and Port Washington.
Do you offer emergency HVAC repairs?
Yes, our 24/7 emergency service responds promptly to heating and cooling failures year-round.
What oil delivery options exist?
Choose between COD spot pricing or annual contracts with guaranteed rates and priority delivery.
Are installation estimates free?
Yes, we provide free, no-obligation estimates for all heating, cooling, and oil tank installations.
How quickly can you deliver oil?
COD deliveries typically occur within 24-48 hours, with emergency options available for urgent needs.
