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Where I live, a permit has to be pulled for installation of a gas furnace according to the Fairfax County government website, but is it mandatory for a contractor to have a special classification/certification for installing gas furnaces? Maybe mandatory is the wrong word, but I think there is some sort of protocol that is supposed to be followed when dealing with gas, but my neighbor says no.
Are we both correct? It would be advisable that someone have some sort of certification, but because no one does any checking up on this kind of thing, it's not mandatory.
I know there are a lot of do it yourself (DIY) folks in this world, but aren't they supposed to follow some kind of protocol if there going to be installing gas lines, electrical panels/wiring and such? The DIYer would buy the equipment, but have a certified person install it.
Every jurisdiction is different in regards to what can or cannot be done by a tradesman, but when it comes to gas, I would feel more confident with someone that is trained/certified, even if it's not mandatory.
Although the principals of plumbing water and gas are the same, having the assurance that they know the difference between white vs. yellow teflon tape and installing screwed sch.40 black pipe/iron fittings vs. installing copper/cpvc/pex, amongst other aspects, is always welcome.
Hi Virgo,
I tell people to get a list of approved installation contractors from the manufacturer of the appliance. An manufacturer approved distributor should be able to give you similar guidance. Typically the installation contractor should have at last an HVAC license. You can get a sense of how they did by looking at the installation guide that comes with the appliance and see if they followed the criteria within. A lot of info from the manufactures and licensing boards is available online of course.
Where I live a certified licanse installer must be used. Otherwsie he can't even get the furnace by state law.
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