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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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Service categories

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1–3 of 5
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 all services

Showing 85-96 of 200 services

Leaking Boiler Repair service
ResidentialRepair

Leaking Boiler Repair

Identify the source of visible boiler or hydronic-system water leakage and plan a safe repair.

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Low Refrigerant Diagnosis service
ResidentialCommercialRepair

Low Refrigerant Diagnosis

Evaluate suspected low refrigerant, confirm system conditions, and identify whether a leak or another fault is present.

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Managed Property HVAC Filter Program service
Property ManagementMaintenance

Managed Property HVAC Filter Program

Plan, schedule, inventory, and document filter replacement across managed buildings and units.

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Managed Rooftop Unit Maintenance service
Property ManagementMaintenance

Managed Rooftop Unit Maintenance

Coordinate recurring rooftop-unit maintenance, access, records, and replacement planning for managed commercial properties.

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Mass Save Equipment Eligibility Verification service
ResidentialSupport

Mass Save Equipment Eligibility Verification

Review equipment, AHRI data, and current program requirements before a rebate application or proposal is finalized.

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Mass Save Rebate and AHRI Support service
ResidentialCommercialSupport

Mass Save Rebate and AHRI Support

Verify matched equipment details and prepare source information for rebate planning.

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Mini-Split Deep Cleaning Service service
ResidentialMaintenance

Mini-Split Deep Cleaning Service

Clean supported ductless indoor units, filters, coils, blowers, and accessible drainage components.

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Mini-Split Electrical Circuit Installation service
ResidentialCommercialInstallation

Mini-Split Electrical Circuit Installation

Install supported dedicated circuits and disconnects for ductless mini-split equipment.

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Mini-Split Error Code Diagnosis service
ResidentialRepair

Mini-Split Error Code Diagnosis

Interpret supported mini-split error codes and determine the appropriate service path.

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Mini-Split Leaking Water Repair service
ResidentialRepair

Mini-Split Leaking Water Repair

Diagnose indoor-unit water leaks involving drainage, pitch, pumps, coils, or installation conditions.

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Mini-Split Not Cooling Repair service
ResidentialRepair

Mini-Split Not Cooling Repair

Diagnose a ductless system that runs without providing expected cooling.

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Multi-Family HVAC Maintenance service
Property ManagementMaintenance

Multi-Family HVAC Maintenance

Maintain apartment, condo, and shared-building HVAC systems with tenant coordination.

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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!