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Plymouth's #1 HVAC, Electrical & Plumbing
Your Neighbors' Trusted Home Comfort Experts in Plymouth, MA
Licensed • Insured • Mitsubishi-Certified
From emergency repairs to full system installations — we keep your home comfortable year-round. Serving Plymouth, Duxbury, Kingston & the South Shore since 1998.
From emergency repairs to full system installations — we keep your home comfortable year-round. Serving Plymouth, Duxbury, Kingston & the South Shore since 1998.
Get What You Need
What We Do
Complete Home Comfort Solutions
One accountable expert team for HVAC,
electrical & plumbing — serving Plymouth & the South Shore.
electrical & plumbing — serving Plymouth & the South Shore.
Heating & Cooling
From emergency repairs to complete system replacements, we keep your home comfortable year-round. Heat pumps, dual-fuel systems, furnaces, and AC — we do it all.
Explore HVAC ServicesElectrical Solutions
Licensed electricians providing safe, code-compliant electrical work. Service panel upgrades, EV charging stations, whole-home generators, and all residential electrical needs.
View Electrical ServicesIndoor Air Quality
You can have fresh, clean air in your home. No more funky smells. No allergens. No microbes. You can control it all. Huminification, fresh air ventilation, UV air purifier, and a solid filter strategy.
Learn More about IAQ Solutions
We Hold Ourselves to Higher Standards
Why Our Neighbors Choose Bay State Energy Services
At Bay State Energy Services, we don't just meet industry standards — we exceed them. While other home service companies do the minimum, we've invested heavily in training, technology, and processes that deliver exceptional results for every customer, every time.
Certified & Rigorously Trained Technicians
Every technician undergoes ongoing education to stay current with the latest systems and safety protocols. This is not lip service. We are nuts about this.
Mitsubishi Elite Diamond Contractor
This matters in so many ways. #1, Global Technology Leadership. #2. Expertise. Mitsubishi demands the very best for you, the homeowner. #3. Your warranty: 12-year parts warranty when we do your installation.
Transparent Pricing, No Surprises
All work meets or exceeds the Massachusetts electrical codes and standards. Industry-leading tools are used to design your custom system. You will know what you need before we leave your consultation.
Mass Save
Technology-forward, Mitsubishi-focused, Mass Save-savvy. Maximizing your rebates & savings. This is a real thing. Potentially five figures in savings on the line here, but you need a Mass Save-approved mechanical contractor who knows how the system works.
Permits Pulled for All Work
We handle all required permits — you never have to worry about compliance.
Owner-Led, Plymouth-Based Team
We're committed to the same neighborhoods and families you care about — respectful crews, meticulous cleanup.
BAY STATE ENERGY SERVICES
HVAC SOLUTIONS
Licensed & Certified Proffesional
4.9
Average Star Ratings and Reviews on Google
Certifications & Affiliations
Explore Services
Everything Your Home Needs
Heat Pump Systems
Mitsubishi-certified installs.
AC Repair & Replacement
Stay cool all summer with reliable air conditioning
Electrical Panel Upgrade
Safe, modern electrical service for today's homes
Furnace Services
Keep your family warm through the coldest months
Whole-Home Generator
Never lose power during storms and outages
24/7 Emergency Service
We're here when you need us most — day or night
Latest Articles
Tips & Insights from Our Experts
Stay informed with energy-saving tips, seasonal maintenance guides, and more.
Real Reviews From Real Customers
What Our Clients Say
Don't take our word for it — see what your neighbors are saying about Bay State Energy Services.
“
★★★★★
Absolutely outstanding service! They replaced our entire HVAC system and the team was professional, clean, and incredibly knowledgeable.
SM
Sarah M.
“
★★★★★
Called for an emergency heat situation on a Sunday morning and they had someone out within 2 hours. Can't say enough good things.
TR
Tom R.
“
★★★★★
Used Bay State for a complete electrical panel upgrade. Extremely professional and the work passed inspection with zero issues.
LK
Lisa K.
0% Financing Available — 18 Month Same as Cash
Don't let budget stand between you and home comfort. Apply in minutes — approval decisions in seconds.
Subject to credit approval. On approved credit only.
Service Area
Check If We Serve Your Town
Serving Plymouth & the South Shore
Bay State Energy Services is based in Plymouth and serves homeowners and small light-commercial properties across the South Shore. Our local team provides prompt, professional service with no hidden travel fees.
Plymouth
Duxbury
Kingston
Marshfield
Pembroke
Hanover
Scituate
Norwell
Rockland
Carver
Save up to 30% on Energy Bills
Protect Your Investment
Join Our Annual Maintenance Plan
Regular maintenance is essential for system longevity, energy efficiency, and preventing costly breakdowns. Our maintenance plan takes the guesswork out of staying on schedule while providing valuable benefits and priority service.
Annual tune-up (heating & cooling)
Priority scheduling — skip the waitlist
15% discount on all repair services
Transferable plan if you sell your home
GET IN TOUCH
Request Service or Get a Free Quote
Fill out the form and a member of our team will follow up within one business day.
Phone
Address
10 Water St, Plymouth, MA 02360
Business Hours
Mon–Fri: 8:00 AM – 4:00 PM
office@baystateenergy.com
Schedule Service
Fast response — usually within 1 hour during business hours.