EXPERT
GAS & HVAC
SERVICES
Installation, repair, and maintenance of gas heating and HVAC systems — plus propane, generators, and underground utilities. Licensed technicians serving NH and Southern Maine, available 24/7 for emergencies.
OUR SERVICES
From new system installations to emergency repairs and preventive maintenance — we handle every aspect of your home's gas and HVAC needs.
Gas & HVAC Systems
Complete installation, repair, and maintenance of gas heating and HVAC systems — plus all types of water heaters. We work with all major brands and ensure every job meets manufacturer specs and local code requirements.
- HVAC Installation (Furnaces, Boilers, Heat Pumps)
- HVAC Repair — All Makes & Models
- Preventive Maintenance & Tune-Ups
- Propane & Natural Gas Water Heaters
- On-Demand (Tankless) Water Heaters
- Heat Pump Water Heaters
Propane & Fuel Systems
Expert installation and service of underground propane tanks, distribution lines, and whole-home standby generators. From site assessment and permitting through installation and pressure testing — we handle every step safely and to code.
- Underground Propane Tank Installation
- Propane Line Installation & Pressure Testing
- Tank Sizing, Selection & Code Compliance
- Standby Generator Installation
- Automatic Transfer Switches
- Generator Gas Line Connections & Maintenance
Utilities & Site Work
Full-service underground utility work for residential and light commercial properties. From new water and sewer line installations to complete septic system design, installation, and ongoing service.
- Water Line Installation & Replacement
- Sewer Line Services
- Septic System Design
- Septic Installation & Service
WHY CHOOSE
SEACOAST GAS?
We've built our reputation one job at a time across the New Hampshire seacoast. When your heating system needs attention, you deserve a team that shows up on time, communicates clearly, and gets the job done right.
Licensed & Insured
Fully licensed in New Hampshire and comprehensively insured. Your home and family are protected on every job.
24/7 Emergency Service
Heating emergencies don't wait for business hours. Our technicians are available around the clock when you need us most.
Experienced Technicians
Our team brings years of hands-on experience with residential and light commercial HVAC systems across the seacoast region.
Local & Trusted
We're your neighbors. Seacoast Gas Services is proud to be a locally owned business serving the Dover, NH community.
Quality Guaranteed
We stand behind our work. Every installation and repair comes with our satisfaction guarantee and manufacturer warranties.
Transparent Service
No hidden fees, no surprise charges. We explain what's needed, why it's needed, and provide clear estimates before any work begins.
WHAT OUR
CUSTOMERS SAY
"Seacoast Gas replaced our aging boiler and the whole process was seamless. The technicians were professional, clean, and explained everything clearly. Our home has never been warmer."
"Called them on a Sunday night when our furnace went out. They had a tech at our door within two hours. Incredible service — I won't call anyone else for HVAC work."
"We've been on their annual maintenance plan for three years. Our system runs better than ever and we've avoided any major repairs. Highly recommend their preventive care program."
SERVICE
AREA
Based in Dover, NH, we proudly serve homeowners and businesses throughout the greater seacoast region — including Southern Maine. If you don't see your town listed, give us a call — we may still be able to help.
ABOUT
SEACOAST GAS
Seacoast Gas Services was founded with a simple mission: provide the seacoast region with honest, expert HVAC service that homeowners can count on. We're a locally owned company, and we treat every customer's home with the same care and respect we'd want for our own.
Our licensed technicians are trained on the latest gas heating and HVAC technologies. Whether you need a brand-new system installed, an emergency repair in the middle of winter, or a routine tune-up before the cold season hits, we have the expertise and equipment to handle it.
GET IN
TOUCH
Ready to schedule service or have questions about your HVAC system? Reach out — we respond promptly and are always happy to help.
Heating emergency? Don't wait. Call us any time — day or night, weekends and holidays. We'll dispatch a technician as quickly as possible.