The list price on a complete set up for the modular panels (4 panels, 4 filler sheets, 2 safety straps, and case for all of it) is $3195.00. Once again that is list price and not what I would consider selling price. Also that does not include a 3rd panel for a furture 3rd fan if the customer would want one, that would be an additional $900 (ballpark) price.
Now here is the issue with the Q4E that I was referring to. If you buy a Q4E (cloth panel) and decide at a later point that you want to upgrade to a 2 or 3 fan system you cannot do it. The 3300 fan is so powerful that it will literally suck the 2nd fan out of the frame in the cloth 2 fan set configuration. That is why you have to have modular panels on a multiple fan (3300 fan) set up. So in the long run it is much cheaper to just start with a Q5E in the first place.
As far as performance, there is zero performance gain by going with the modular panel set ups (Q56, Q4E and QMG). The panels are much faster to set up, and look a heck of a lot better (engineering firms or equal normally go for the look of the modular panels).
The are some other cost considerations associated with blower doors that the end user is not always aware of. First you need a fan cover to do your baseline test. All manufactures sell these, and it is included with the Retrotec doors. I am not sure about the Infiltec or TEC door. They are not expensive, just make sure you get one or else you will be using cardboard and duct tape (not professional looking). The other big consideration that is usually overlooked is the ability to expand the frame size, which in turn leads to needing a larger cloth. Any cloth blower door system falls to this future potential cost. Then add in the fact you might want to add a 2nd or 3rd fan to your cloth system. Now you will need a 2 hole cloth in both expanded and normal size, as well as two different 3 hole cloths (potentially 5 more cloths at approx $200 a pop). Finally is software. All manufactures have their own software, but you might want to get ahold of Home Guage to check out their new energy auditing software. Kevin Richardson linked it in another thread. It has the ability to intergrate your CAZ testing numbers, which is super useful. It does not do modeling, currently you can use RemRate for that. I talked to the owner of Home Guage and he told me he is trying to work out something with RemRate to intergrate the RemRate modeling into the Home Guage software. I would imaging many of you guys already use this software for your HI business, so I would think it would be a natural progression to use it for your energy auditing business.
Other considerations in the cost of a blower door:
-Depending if you are doing BPI / Resnet / something else, the blower door is never the only piece of equipment you will need to purchase. Take your BPI/Resnet/something else training first to know what you need. The “something else” is the monkey wrench in the equation. Every state is doing something different, and then the cities/counties in those states sometimes differ from what the state is doing (Austin TX and Houston TX are great examples of that).
-Calibration expenses. When figuring out what this will cost you, and how often also consider the freight involved. We ship blower doors all over the country and have a pretty large UPS account, and it still costs us upwards of $75 to ship a blower door (one way).
-More training and/or certifications.
-Future cost of expanding the system. Extra fan(s), cloth(s), modular panel(s) extra cables, hoses etc.
-Make sure you do not work in an area that requires some type of crazy standard. Here are some examples:
Enclosure integrity tests using NFPA 2001, ISO 14520
Energy Loss Tests using: ATTMA: TS1, British CIBSE TM23, Canadian CGSB 149.10, American ASTM E779, Europe CEN/TC, Japanese standard, Dutch NEN 2686, SuperE, EN13829 and California Title 24 and current RESNET standards (in California there is CalHERS)
Smoke and Refuge using: PFEER, 1994 Uniform Building Code Section 905 (fire supression testing standards)