Paul Keleher Electrical Services

Electrician, Heating and HVAC

Located in Berlin serving Berlin, Concord and Bolton areas

GIVE US A CALL: (978) 838-2457

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What is Electric Thermal Storage Heat?


OFF-PEAK ELECTRIC HEAT, also known as ELECTRIC THERMAL STORAGE HEATING (or ETS, for short) uses electricity purchased at night at discounted prices to heat bricks housed in insulated chambers within a specially designed ETS furnace, boiler or space heater, delivering the heat stored in the bricks to the heated space 24-7 using your existing distribution system and recharging itself again each night at the discounted price. Because an ETS heating system uses electricity at night when Concord Light has contracted for a steeply discounted rate, the utility is able to pass a significant savings on to you.

Paul Keleher Electrical Services

... is the most knowledgeable and experienced technician for Electric Thermal Storage Heating Systems in Massachusetts…experienced in repairing most major European and domestic brands: Steffes, Stiebel Eltron, & Technotherm. If you have an older European brand of ETS in your home, you may want to consider upgrading it to a modern computer-controlled ETS system from Steffes before undergoing the very expensive option of changing distribution systems entirely.

Factory trained and authorized service, sales and installation of Steffes ETS heating systems

If you have an electric Thermal Storage Heating System in need of service, give Paul a call to schedule an appointment for prompt, courteous and knowledgeable service and repair. References are available on request.