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HVAC, electrical, and building services

Services for homes, businesses, and managed properties

Explore installation, repair, maintenance, efficiency, and electrical services across Massachusetts.

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Commercial HVAC services

Commercial HVAC

Commercial heating, cooling, ventilation, controls, maintenance, and replacement support for occupied buildings and facilities.

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Electrical Services services

Electrical Services

Licensed electrical troubleshooting, upgrades, circuits, controls, and equipment connections for residential and commercial properties.

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Service catalog

Browse Energy Efficiency services

Showing 25-36 of 86 services

Heat Pump Repair service
ResidentialRepair

Heat Pump Repair

Diagnose and repair heat-pump heating, cooling, airflow, and control problems.

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Heat Pump Short Cycling Repair service
ResidentialRepair

Heat Pump Short Cycling Repair

Diagnose frequent heat-pump starts and stops involving airflow, controls, sizing, electrical, or refrigerant conditions.

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Heat Pump Sizing and Selection service
ResidentialCommercialConsultation

Heat Pump Sizing and Selection

Plan supported heat-pump equipment and capacity using building conditions, climate, distribution, and backup-heat needs.

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Heat Pump Water Heater Installation and Service service
ResidentialCommercialInstallation

Heat Pump Water Heater Installation and Service

Install and service efficient heat-pump water-heating systems.

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High-Efficiency Air Conditioning Upgrade service
ResidentialCommercialReplacement

High-Efficiency Air Conditioning Upgrade

Replace older cooling equipment with efficient, properly selected central AC.

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High-Efficiency Boiler Upgrade service
ResidentialCommercialReplacement

High-Efficiency Boiler Upgrade

Upgrade older boiler equipment to a more efficient hydronic heating system.

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HVAC Electrification Consultation service
ResidentialConsultation

HVAC Electrification Consultation

Plan a practical transition from fossil-fuel HVAC to electric heat-pump systems.

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HVAC Energy-Efficiency Assessment service
ResidentialCommercialConsultation

HVAC Energy-Efficiency Assessment

Review HVAC performance, comfort, controls, and upgrade opportunities.

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HVAC Filter Replacement and Filtration Upgrade service
ResidentialCommercialMaintenance

HVAC Filter Replacement and Filtration Upgrade

Replace supported filters and evaluate filtration upgrades matched to equipment airflow requirements.

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HVAC Load Calculation and Equipment Sizing service
ResidentialCommercialConsultation

HVAC Load Calculation and Equipment Sizing

Evaluate building loads and system requirements to support correctly sized HVAC replacement or conversion planning.

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HVAC Replacement and Capital Planning service
Property ManagementConsultation

HVAC Replacement and Capital Planning

Prioritize equipment replacements and budget planning across a portfolio.

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Indoor Air Quality Solutions service
ResidentialCommercialConsultation

Indoor Air Quality Solutions

Improve filtration, purification, ventilation, and indoor air quality at home.

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Our Happy Customers

Henry H.

Replace batteries in thermostat, checked furnace

Jenny W.

Great service! On time, knowledgeable & professional

Ray

Just had a service call because my tankless water heater stopped working with E110 code. Andrey located the root cause real quick and fixed the issue within half an hour, also gave reasonable recommendations for further maintenance.

Randy J.

Thanks to Andrey for an amazingly quick response to my request for a service call. He diagnosed and fixed my issue within 24 hours of my asking for help. Excellent service. Thanks.

Rajib M.

Andrey from Green Flow came out exactly when he said he was going to and fixed a simple problem with the heating system at my rental property. Really appreciate the quick turnaround and fair pricing.

Valni D.

I’m delighted. Andrey the technician came on time and found the problem. They charged me fairly price.We thinking about hiring the company to maintain.

Connie F.

I needed a thermostat installed. I called one day they were there the next day. Installed the thermostat and made sure it was working before they left. Came back the next day because no heat was coming out the vents and fixed that issue. No problems since. Thanks...

Jahangir R.

They were very organized to communicate and be on time to come to look at my air condition to fix it.

Atrian I.

Maintenance and repair A/c unit.

Enrique B.

Tankless water heater failed . I contacted Green Flow and Aundrey was dispatched. He arrived on time diagnose the issue and called the manufacturer eventually they agreed to replace the unit. Within a few days a new unit was installed and hot water was restored. Service was fast...

Yakov S.

I had an excellent experience with Green Flow, they were available to replace my dead central A/C unit on a short notice, and the price was thousands of dollars less than what I got quoted by two other companies. I would definitely use them again.

Gilberto C.

Great service. It was awesome that they were able to solve my heating issue in few hours. Love the transparency on the pricing. Andrey was great!