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Blog · Water heating · 5 guides

Water heating guides for Maryland homes

Water heater decisions in Montgomery County turn on things a national buying guide never mentions: WSSC water drawn from the Potomac and Patuxent rivers, which runs colder in winter and harder on the Potomac side; houses in Glen Hills and outer Potomac with no gas main; well water in Olney with its own scale problem; and chimneys left oversized when a furnace goes high-efficiency.

These guides compare the options the way we compare them on a service call — first-hour rating, winter temperature rise, gas line and electrical capacity, venting, and what each choice costs to run on Pepco, BGE and Washington Gas rates.

Water heating · 7 min read

Power Vent vs. Atmospheric Water Heater in Maryland: The Orphaned Chimney After a Furnace Upgrade

When a furnace goes high-efficiency, it leaves the gas water heater alone in a chimney built for two. How that orphaned chimney fails in older Montgomery County houses, and when the answer is a liner, a power vent or no vent at all.

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Water heating · 7 min read

Repair or Replace a Water Heater in Maryland: Age, Anode Rods, Expansion Tanks and the WSSC Permit

Water under the tank does not always mean a new water heater, and a dripping relief valve on a WSSC-served house is usually a pressure problem, not a tank problem. How we decide between a repair and a replacement.

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Water heating · 6 min read

Gas vs. Electric Tankless Water Heater in Maryland: The Winter Inlet Problem and the 150-Amp Question

Electric tankless avoids the gas line and the vent, which is why it gets quoted. Then January WSSC water arrives at 45°F and a 36 kW unit, drawing 150 amps, delivers about one and a half showers.

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Water heating · 8 min read

Heat Pump Water Heater vs. Gas Water Heater in Maryland: Basements, Rebates and Running Cost

A heat pump water heater is the cheapest way to heat water in a Maryland house on paper. Whether it is the cheapest in yours depends on the basement it sits in, the circuit beside it and the chimney the gas tank leaves behind.

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Water heating · 9 min read

Tank vs. Tankless Water Heater in Maryland: The January Test, Hard Water and the Gas Line

A tankless unit that delivers two showers in August can deliver one and a half in January. How WSSC river water, Potomac-side hardness and a 1/2-inch gas line decide the answer in Montgomery County.

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