What is a four season rv?

[Wild Card]

A 4 season RV is like finding Bigfoot. Best is to get good 3 season performance and when the weather dips solidly in the 20's as highs its time to migrate.

[PKI]

Ah, the mobile home industry has built units for years with 2in walls and not much insulation. Why would we expect travel trailers to be much better. S&Bs are built with 4" walls and that is marginal. A good structure is dual 2x4s offset and 2x6s offset is better. So the only way to have a four season RV is to put it in a well insulated and heated/cooled RV garage. However, it is not all marketing hype. Some trailers are not as poorly insulated as others. Our Tiffin Moho is better than the AirStream, because fiberglass does not transmit thermal energy as fast as metal. However, we suspect we have some voids and uninsulated areas to upgrade.

Four season = sealed, insulated (all six sides of the box), a good furnace, a good AC, ventilation, a dehumidifier, large propane tanks, 50 amp service, dual pane windows, heavy drapes, blinds, reflective surfaces to keep heat out, awnings to shade coach surfaces, and all the plumbing/tanks heated and sealed off from wind and weather.

[twogypsies]

Here's how Newmar insulates. Our Dutch Star was always comfortable in summer and winter. It was also extremely quiet inside.

https://www.youtube.com/watch?v=NpxOdMmuerg

[Ray,IN]

Originally Posted by richard5933

Why is this controversial?

If the plumbing is built so that it can be kept above freezing, including the waste tank(s) discharge plumbing, you have a start.

Add adequate insulation and windows and I'd consider it a 4-season rig.

The problem I see is that all too often the manufacturer will leave a piece of the plumbing or waste system in a place that cannot be kept above freezing, or without adequate means to do so.

Of course, operating a rig in the winter will add considerably to the cost of heating, as keeping tanks and wet bays warm is not easy.

That is basically the explanation in the link I posted; good call. BTW, FMCA forums are operating on 3 cylinders, but operating.

[gatorb8]

in Florida a 4 season rv has 3 ac’s
a heavy duty rain roof
and a flood alarm!