Blue flame heats the air in the room. If you have average ceiling heights, well insulated & non drafty spaces, the blue flame is best.

If you have high ceilings, doors opening, or un-insulated spaces, then we suggest the infrared, it heats people & objects etc.

We cannot emphasize enough the importance of sizing a vent free heater. Some people think the bigger the better, even in a small space.

You need to realize that putting a 30,000 BTU (up to 1000 square feet) heater in a 300 sq ft area will mean that the heater will shut down & cause nuisance outages. All indoor vent free units are fitted with an Oxygen Depletion Sensor (ODS). When the sensor detects a lack of oxygen the unit switches off.

It is a real mistake to think it will heat up the room quicker, or that bigger is better. It is of paramount importance that you size your new heater according to the space you wish to heat, bigger is not always better.

- 10,000 BTU covers up to 300 square foot area
- 20,000 BTU covers 300-600 square foot area
- 30,000 BTU covers 600-1000 square foot area

No they are not compatible! If you have natural gas available then buy a natural gas model.

If you have a 100lb gas tank or intend to get one, then buy the liquid propane gas (LPG) unit.

Read below about tanks smaller than 100 lb.

This is a question we get asked all the time. The only thing we can tell you is that it is against their local code laws. There are various other States who have some restrictions too. Even local Cities have their own laws. You should your check local codes.

www.ventfree.org has a USA map showing where restrictions apply. You can download it from their technical codes and standards page.

National gas assoc. codes set the standard, which is: Maximum 10,000 BTU's for a bedroom & 6,000 BTU's for a bathroom.

We recommend that you have a professional install your unit. It is important the recommended clearances are observed. If you are getting a Propane heater you will need a 100 lb tank installed.

We do not recommend a tank smaller than 100 lbs. If these units are connected to smaller tanks you will experience freezing of the gas valve and the heater will shut down, through lack of gas flow.

See the chart below for running times for the various sized units.

The gas usage obviously depends on the BTU output of you heater, as follows

Propane run time (on 100lb Tank)
Btu	Hours	Btu	Hours	Btu	Hours
5000	431	16000	135	28000	77
6000	360	18000	120	30000	65
10000	216	20000	108	36000	60
14000	154	26000	83	39000	55
15000	144	27000	80
A 100 lb tank holds 23.6 US Gallons

The thermostat has setting 1 through 5. Experiment with these settings to suit the room where the heater is situated.

No. It is only to be installed as a supplemental heat source.

Providing the unit is properly installed the units are safe.

You will get some condensation. However, cracking open a window for a short while should be sufficient to reduce it.

A Vent free gas unit does not put off anymore carbon monoxide than a gas stove in the kitchen puts off. It burns 99% of its fuel & the other 1% moisture.

The Vent free heaters we provide are all manufactured only two companies.

Mr. Heater includes a 1 year limited warranty, Empire provides a 5 year warranty on their bathroom heaters

We have been working with them for quite a few years. They are great companies/suppliers, with superb technical support departments.

The garage vent free heaters are referred to as an outdoor unit which require good ventilation. They are not to be used indoors. in a tent or an RV. They have a metal shield on them to protect them from debris hitting the open flame.

Pay close attention to the clearances in the equipment manual which comes with the heaters.