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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 Commercial HVAC services

Showing 85-96 of 104 services

Duct and Airflow Efficiency Optimization service
ResidentialCommercialConsultation

Duct and Airflow Efficiency Optimization

Identify duct and airflow issues that reduce comfort and HVAC efficiency.

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ERV and HRV Installation and Service service
ResidentialCommercialSupport

ERV and HRV Installation and Service

Install and service supported energy-recovery and heat-recovery ventilation systems.

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Geothermal and Water-Source Heat Pump Service service
ResidentialCommercialSupport

Geothermal and Water-Source Heat Pump Service

Install and service geothermal and water-source heat-pump systems and components.

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High-Efficiency Boiler Control Optimization service
ResidentialCommercialSupport

High-Efficiency Boiler Control Optimization

Review supported boiler control settings, zoning, reset logic, and operating behavior for reliable efficient operation.

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HVAC Contactor and Relay Repair service
ResidentialCommercialRepair

HVAC Contactor and Relay Repair

Diagnose and replace supported HVAC contactors, relays, and related control components.

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HVAC Equipment Inventory and Documentation service
Property ManagementSupport

HVAC Equipment Inventory and Documentation

Document model, condition, service history, and replacement considerations by asset.

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Hydronic Outdoor Reset Control Upgrade service
ResidentialCommercialInstallation

Hydronic Outdoor Reset Control Upgrade

Install or optimize supported outdoor-reset controls for hydronic heating systems.

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Make-Up Air Unit Service service
CommercialSupport

Make-Up Air Unit Service

Diagnose, maintain, and replace supported commercial make-up air equipment and controls.

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Managed Commercial Building HVAC Support service
Property ManagementSupport

Managed Commercial Building HVAC Support

Coordinate HVAC service for offices, retail, and other managed commercial buildings.

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Office and Retail HVAC Service service
CommercialSupport

Office and Retail HVAC Service

Support reliable heating, cooling, and comfort for offices and retail spaces.

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R-410A HVAC Service service
ResidentialCommercialSupport

R-410A HVAC Service

Diagnose and service supported R-410A air-conditioning and heat-pump equipment.

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Refrigerant Service Records for Managed Properties service
Property ManagementSupport

Refrigerant Service Records for Managed Properties

Organize equipment, refrigerant, repair, and follow-up information for supported managed-property HVAC service.

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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!