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Fireplace Stoves Pros and Cons in 2021

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fireplace stove

The large amount of radiant heat produced by fireplace stoves suits many of our houses – especially older, poorly insulated, and draughty homes with high ceilings.

A properly sized and installed fireplace stove can heat the whole home.

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Many people also like the toasty radiant heat a fireplace stove produces. Some models can heat hot water, and all of them can be used during a power cut. Many have a flat top surface for heating a kettle – or even for emergency cooking.

Burning wood is carbon-neutral because it’s a renewable resource, but burning it cleanly is the key to making it enviro-friendly.

By burning dry wood in a clean-burning fireplace stove you win 3 times over:

  • Wood is a sustainable heating fuel.
  • You get more heat from a clean-burning (non-smoky) fire.
  • Cleaner burning means fewer smoke particles lodging in all our lungs.

That’s the positive stuff. The flip side of fireplace stoves is their contribution to air pollution and their relative lack of convenience.

If you burn wood carelessly or burn wet wood, you can create a health hazard through ultra-fine pollution lodging in people’s lungs.

Modern fireplace stoves can burn much more cleanly than older models. But our tests have shown that clean-burning only occurs if the fire is carefully tended – and with the right-sized dry wood.

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Air pollution is not inconsequential. The ultra-fine soot particles in wood smoke are a health hazard.

They can lodge deep in the lungs causing premature death, hospitalization, and respiratory illness.

Fireplace stoves aren’t as convenient as heat pumps or central heating systems.

You “regulate” the room temperature through the amount of wood you burn, and there’s no timer-controlled automatic starting system. You also have to buy firewood in advance and store it.

If you’re about to buy a fireplace stove, here’s what to consider:

Type

Freestanding models are generally the most efficient (for a given firewood load, they return the most heat to a room). They’re also the cheapest to install.

But if you have an existing open fireplace, an insert model is most often the way to go. Although insert models are not as efficient as free standers, they’re way better than an open fire.

Heat output

If you have a non-draughty well-insulated home, then 10kW should be plenty. A larger house – or the same-sized but less-well-insulated and draughty house – further south will require 12-14kW.

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In non-open-plan houses, there’s no point in overheating the lounge while the rest of the house stays cold. Install a heat-distribution system to help spread the heat throughout the house.

Be careful about manufacturers’ heat-output claims – some grossly exaggerate what you’ll get. Always check the compliance plate.

This has to be on every fireplace stove that’s sold – and it states the tested heat output, along with the efficiency and emissions rate.

Convector vs. radiant

All fireplace stoves both heat the air and radiate heat onto objects that are within a few feet of them. But some fireplace stoves are marketed as predominantly one type or the other.

It depends on the external design of the firebox. Convectors are best for well-insulated non-draughty houses with low ceilings. Radiant-type models suit older and less-well insulated (or draughty) houses with higher ceilings.

A convector heater heats the air immediately around it. Hot air is lighter (less dense) – so it rises away from the heater and gets replaced with cooler air, which is in turn heated.

This convection air-current means that the warmest air in the room ends up near the ceiling, with the coolest air near the floor. Convector heaters are air warmers.

A radiant heater “shines” heat on to anything in its path. That could be you if you’re near the fire or furniture within a few feet of the fire.

Controls/cleaning

The controls should operate smoothly, and it should be relatively easy to clean the outer surfaces and empty the firebox.

Flue system

The flue must have a larger diameter outer shield around it where it passes through the ceiling and attic space.

Some of the newer designs have this air-gap vented outside rather than into the room (outside venting stops hot air escaping from the room).

Some other fireplace stoves get the air needed to burn the wood from outside the house rather than from within the room: this improves efficiency and reduces drafts.

Emissions

The lower the particulate emissions from your fire, the less of a health hazard you’ll be causing. You can find this out from the fireplace stove’s compliance plate.

Wetbacks

A wetback uses copper pipes to circulate water from the fireplace stove to the hot-water cylinder and back. They’re expensive to install, and the hot water cylinder needs to be placed reasonably close to the burner.

The payback period for a wetback depends on how you use your fireplace stove. If the fireplace stove’s not used every day, a wetback is unlikely to be cost-effective. 

Safety guards

Fireplace stove’s surfaces can get very hot and can be a danger to small children. Protective guards are available and highly recommended.

Building consent

Before you buy a fireplace stove, make sure your local authority will allow you to install the model you want: some councils will only allow the installation of models from their recommended list.

You will also need to get a building consent before installing your fireplace stove (you’re unlikely to get one retrospectively).

If an illegally installed wood-burner causes a fire, it may invalidate your insurance cover.

Installation

A poor installation job can ruin the heating and emissions performance of the best of fireplace stove.

Heat transfer

A heat-transfer kit usually removes warm air from the lounge and ducts it to a colder part of the house.

Alternatively, it can be set up to cold duct air from elsewhere in the house and deliver it to the lounge for heating.

Either way, the doors must be left open or ajar so that the air can circulate and even out the temperatures.

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Last update on 2021-03-13 / Affiliate links / Images from Amazon Product Advertising API

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