Commercial Services
Commercial & Industrial Services
At Coastal Efficiency, we provide comprehensive mechanical contracting solutions for commercial and industrial clients across Maine and New Hampshire. With over 40 years of experience, our experienced team delivers dependable installation, maintenance, and project support tailored to each facility’s unique requirements. From HVAC and plumbing to specialized industrial systems, we combine technical expertise with a commitment to safety, efficiency, and long-term reliability.
Our Core Services
Mechanical Contracting
Complete design, installation, maintenance, and troubleshooting of mechanical systems for new construction, renovations, and ongoing facility operations.
HVAC/R & Plumbing
Custom heating, cooling, refrigeration, and plumbing solutions designed to keep your systems running efficiently and reliably in any environment.
Millwright Services
Precision equipment installation, alignment, and maintenance to support optimal performance and uptime in industrial settings.
Specialty Projects
Specialized process piping, clean room systems, manufacturing, automation, water treatment, power generation and fuel systems.
General Contracting
Cleanroom Comprehensive project management and construction coordination from concept to completion. We oversee every stage of the build ensuring quality workmanship, on-time delivery, and seamless integration between trades.
- Cutting edge solutions
- Expert & Professional
Frequently Asked Questions
What types of commercial HVAC and mechanical services does Coastal Efficiency provide?
We offer complete mechanical contracting solutions — from design-build and plan-and-spec installation to retrofit and maintenance.
Our services include:
- Hydronic heating and chilled water systems
- Radiant floor and snow-melt systems
- VRF and heat pump technology (Mitsubishi, Samsung, Daikin, etc.)
- Boiler and mechanical room retrofits
- Ventilation and make-up air systems
- Process piping and controls integration
Do you provide design-build or work off engineered plans?
We can do both.
Our in-house design team can take projects from concept to commissioning under a design-build model — or we can bid and execute based on engineered construction documents.
We frequently collaborate with architects, engineers, and owners to optimize efficiency, comfort, and long-term serviceability.
What industries and building types do you work in?
We serve a broad range of commercial and industrial clients across Maine, New Hampshire, and Massachusetts, including:
- Light industrial & manufacturing facilities
- Commercial offices & mixed-use buildings
- Multi-unit residential complexes
- Schools and municipal buildings
- Healthcare & laboratory environments
- Restaurants, breweries, and hospitality spaces
- Coastal and marine facilities requiring corrosion-resistant equipment
Are you licensed and insured for commercial mechanical work?
Yes — Coastal Efficiency, Inc. holds state fuel gas, and refrigeration licenses in Maine and New Hampshire, and carries full commercial liability and workers’ compensation coverage. We also hold USCG Chief Engineer & ME 2nd class Steam generator operator licenses.
Do you offer preventative maintenance and service contracts?
Absolutely.
We provide customized service and maintenance programs for HVAC, boiler, and mechanical systems — including seasonal inspections, filter changes, combustion analysis, and heat pump performance checks.
Planned maintenance helps reduce downtime, extend equipment life, and maintain warranty compliance.
Is Coastal Efficiency a Mitsubishi Diamond Dealer?
Yes.
Coastal Efficiency, Inc. is a Mitsubishi Electric Diamond Contractor, recognized for excellence in system design, installation quality, and ongoing customer support.
As a Diamond Dealer, we provide an exclusive 12-year limited warranty on Mitsubishi parts and compressors; available only through certified Diamond Contractors.
This extended coverage reflects Mitsubishi’s confidence in our training, workmanship, and commitment to long-term performance.
Can you integrate renewable or high-efficiency technologies into existing buildings?
Yes — we specialize in energy-efficient retrofits.
Our team can integrate heat pumps, variable-speed hydronics, and building automation controls into older systems, improving performance and reducing operating costs.
We also assist with Efficiency Maine and federal rebate programs for qualifying upgrades for offsetting project costs.
Do you handle large-scale radiant and hydronic systems?
Yes. Radiant and hydronic systems are one of our core strengths.
We design and install:
- In-slab and under-floor radiant heat systems
- Snow-melt systems for commercial drive lanes and walkways
- High-efficiency condensing boilers, pumps, and manifolds
- Variable-temperature control systems and mixing strategies
How do you handle mechanical system commissioning?
Each project includes a full commissioning process: start-up, flow and pressure verification, control calibration, and owner training. We document system parameters and deliver as-built drawings, O&M manuals, and recommended maintenance schedules.
What brands and manufacturers does Coastal Efficiency work with?
We source and service premium, field-proven brands such as:
- Lochinvar, Navien, Viessmann, NTI (boilers)
- Mitsubishi, Daikin, LG (heat pumps / VRF)
- Taco, Bell & Gossett, Grundfos (pumps)
- Caleffi, Spirotherm, Watts, Honeywell, Siemens (controls and accessories)
Do you provide emergency or after-hours service?
Yes — we offer 24/7 emergency response for commercial and industrial clients. If your heating, cooling, or process system fails, our technicians can diagnose and repair most issues on site, minimizing downtime and protecting critical operations.
Do you assist with code compliance and permitting?
Yes. Coastal Efficiency handles mechanical, gas, and ventilation permits and ensures compliance with all state and local building codes, including NFPA 54, IMC, and IECC efficiency standards.
What areas does Coastal Efficiency serve?
We’re based on the Southern Maine Seacoast and proudly serve:
- Southern Maine (Wells, Kennebunk, Portland)
- Seacoast New Hampshire (Portsmouth, Dover, Exeter)
- Northern Massachusetts (Newburyport and beyond)