Showing posts with label heater. Show all posts
Showing posts with label heater. Show all posts

1/06/2012

Mr. Heater 80,000 BTU Propane Convection Heater #MH80CV Review

Mr. Heater 80,000 BTU Propane Convection Heater #MH80CV
Average Reviews:

(More customer reviews)
I use the Mr. Heater 30-80K convection heater in my garage, which is roughly 625 SF with high 14 ft. ceilings, CMU block wall, un-insulated ceiling. During winter months of the teens outside, I can bring the inside temp of my garage up to 70 degrees within a short time. However, you may need to hang a box fan up near the ceiling or install a ceiling fan to circulate the heat back down, it puts out a strong trickle of heat in a 360 degree radius that is easy to regulate to keep from alternating between freezing and roasting.
The biggest plus for me with this unit it the lack of objectionable fumes as are produced by forced air kerosene heaters, the propane burns clean and is easy to purchase at my local filling station, no spills or lugging around 5 gallon containers of kerosene.
If massive amounts of heat are what you want, you should consider the forced air propane heater made by Mr. Heater. They put out massive quantities of heat in short order.
I get about 15 hours of use per 25 pound propane tank, the same type my BBQ runs on, by turning this unit on high and then shutting it down to low, alternating this cycle. You can use upwards of a 100 pound propane tank.
The unit is much smaller then I expected which is a plus, it is light and very well made and simple to use.

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The Mr. Heater MH80CV 30,000-80,000 Btu portable propane convection heater is ideal for heating large indoor spaces of up to 1,900 square feet. The convection design draws cold air up from the floor through propane burners then distributes warm air out through the top, giving you 360-degree directional heat. The unit features a piezo push-button igniter, adjustable heat output control (from 30,000-80,000 Btu), and an "Insta-Lock" system for easy, tool-free assembly. For safety, the heater shuts off with loss of flame, and the sturdy base keeps it upright. The included 10-foot hose connects to 20-pound (minimum required) propane cylinder. CSA Certified. One-year limited warranty.--Josh Dettweiler
What's in the BoxHeater, thermocouple, manual, operating instructions, regulator, 10-foot hose

Five Tips for Buying a HeaterChoosing a space heater is a matter of sifting through a bewildering array of types, power ratings, and fuel sources. Let's break it down a little to make the process easier.

What are the different types of space heaters?
Radiant heaters emit infrared radiation that directly warms the objects in front of the heaters (rather than the surrounding air). If you only need heat by a desk or in a small section of a room, a radiant heater is quiet and will use very little power.
Forced-air heaters use a fan to blow air that has been warmed by metal or ceramic heating elements. A forced-air heater is appropriate for quickly heating up a small- to medium-sized room, but can be noisy.
Convection heaters draw cold air from the floor; the air is warmed by heating coils and emitted from the top of the heater. A convection heater is appropriate for quickly heating up a small- to medium-sized room, but also can be noisy.
Radiators work by heating oil enclosed in a reservoir, gradually heating the surrounding air. If heating speed isn't an issue, you might want to opt for a radiator. These are extremely quiet and effective--perfect for bedrooms.


Should I buy an electric or a combustion model?If you want a heater that will be available in emergencies, or that can heat areas larger than a single room, choose a "combustion" model--one that is powered by a gas or fuel like propane, kerosene, natural gas, or diesel. Which fuel type you choose depends largely on convenience and local availability. For example, diesel would be appropriate for a heater you take with you on long car trips.

How powerful a heater do I need?Heaters are rated by BTU, which stands for British Thermal Unit (the amount of heat needed to heat one pound of water by 1 degree F). To find out how many BTU you need:
Calculate the volume of the space to be heated by multiplying square footage by height.
Multiply that number by 4 if your insulation is poor, 3 if it's average, or 2 if it's good.
The resulting number is a ballpark figure for how many BTU you'll need.
Do space heaters cost a lot to operate? As a general rule, electric space heaters are more expensive to use than combustion models. To ensure energy efficiency, a thermostat is a must-have feature for any heater. For radiant heaters, models with a 360 degree heating surface can heat larger spaces. If you need a forced-air heater, models with ceramic elements tend to be more efficient.

Are space heaters a fire hazard?Space heaters are implicated in about 25,000 residential fires every year. To ensure proper safety, always follow the manufacturer's usage instructions and fill out the warranty card to receive informational updates from the manufacturer. Also, look for extra safety features such as an automatic shutoff switch that can shut down the unit if, for example, it gets upended. In addition, choose a model where the heating element is adequately enclosed within the unit.


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10/27/2011

Intermatic WH21 Electric Water Heater Timer Review

Intermatic WH21 Electric Water Heater Timer
Average Reviews:

(More customer reviews)

This product is easy to install if you know what you are doing.
You should have some background in electrical ampacity and wiring basics.
I did have to purchase an additional pigtail.(flex tubing with 3 #10 color coded wires, and 1/2 connectors on each end about 5 feet total length)
The heater had the wiring flex tubing direct from the wall to the top of the heater. The additional material was about 10.75 at the local hardware store.
I unhooked the wiring from the heater and wired it to the timer, then wired the new pigtail to where I had disconnected the original wires.
The timer has knockouts on the bottom for either 1/2 or 3/4 inch connectors so if it will accomodate either one. You most likely will have 1/2" connections.
Make sure you turn off the breaker before you start.
The entire process took about an hour total.
The instructions that come with the timer aren't that great, so if you don't know what you are doing, it won't help much.
The timer comes with 3 sets of on/off clips so you can time it on and off 3 times.
We set it at on at 5 am, off at 8 am, then on at 8 pm off at 10 pm.
So the timer is on 5 hours a day and off 19.
We figgure we will save around 25 dollars a month off the electric bill.
So... it will take at least 2 months to pay for the timer and other materials we bought. If you pay someone to install it, it will take much longer to pay for itself.
So far, it is working properly and so I am satisfied.

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25A, Water Heater Timer, Electric, External Switch, On/Off Indicator Light, Single Pole, Single Throw, 6,250W, 250V.

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4/17/2011

Cadet #08732 120/240V White Thermostat Review

Cadet #08732 120/240V White Thermostat
Average Reviews:

(More customer reviews)
I have Cadet wall heaters in my apartment that have thermostats that look like this one.
As far as I can tell, these thermostats are useless. When I turn the thermostat up from the bottom settting, they click on at a temperature that doesn't usually match very closely with the actual temperature of the room. Then when I turn the thermostat back down to turn it off, it clicks off at like 5-8 degrees below where it clicked on.
Also, if you turn up the thermostat and turn it down multiple times, the temperatures at which the heater turns on and off seem to vary quite a bit from one time to another.
So I really have a hard time believing these thermostats can control temperature worth a damn.
I have seen baseboard heaters elsewhere that seemed to have the same deficiency. They get the heater running till you're hotter than hell, then they finally turn off and then stay off until you virtually freeze to death.
I think it probably is that the technology itself sucks. I believe these are what they call the "bimetallic" thermostat. Whoever invented this thing deserves to be hung, although he or she probably died centuries ago.
Fortunately, I think the new digital thermostats actually work, unlike these old-style medieval contraptions.
Disclaimer: These are all impressions just based on my limited personal experience with these sorts of heaters and thermostats. I am, for example, assuming that this thermostat is the same ridiculous technology as the ones that go with my wall heaters.
I am going to look around for a portable heater that has a digital thermostat to use in place of the jive turkey wall units that are built into my apartment.I should emphasize- I have no reason to believe there is anything wrong with Cadet heaters or thermostats compared to other brands. As far as I can ascertain, the problem lies with the fundamental concept behind these thermostats, no matter who makes them. And I did notice that Cadet does sell digital thermostats that are supposed to have a 1 degree temperature control. That's the way a REAL thermostat ought to work.
I had a more primitive one that worked pretty well on my gas furnace in LA. I believe it used a mercury switch. Probably they don't allow those any more. Plus I would think that its mode of operation must be similar to these. However, the one on my gas heater worked pretty well. I think it was about 2-3 degrees F between where it turned on and off. That is reasonable.

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120/240V, White, Single Pole Built In Baseboard Thermostat.

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