We usually use panel surrounds, but it also depends on the property and what I am expecting to get for it.  

And I've seen electrical panels that were unsafe to energize, so a forced air system might not be able to get electric for the blower.

Open your panel and locate the main breaker.

Alex, I met you at an local event here in Vegas -couple months ago Outback Jon Lee was MC at a Local Casino you were on the panel BTW Great job we talked a couple minutes after the event I'm also interested in your Apt. interest you mention on the BP Pod cast  searching the multi- family direction seems to be good but different of course.Any time I can take you to Lunch ,coffee & chat let me know ?

Why would anyone need access to an electric service panel?

My AC evaporator luckily has an access panel that is easily removed and then a service plug in the side panel of the coil (plastic disc wedged into sheet metal) that I was able to remove, liberally spray down the coil on the 'incoming air side' with cleaner bought from lowes, and carefully spray some water onto the coils from the easily accessible 'outgoing air' side to back rinse after waiting the recommended time. 

Manny LamSolar panels (maybe?)

There's old school 70's style wood paneling throughout the house.

There is enough parking already,  space in the meter panel for another meter,  and easy access to add plumbing.   

Every time a corporation contributes heavily to a campaign to get a seat at the advising panel that recommends the wording of policy in order to create a loophole or a subsidy or an exemption, they're good businesspeople.Every time a high net worth individual declares his income as part of a trust inside an S-corp inside four or five LLCs, structures himself and his businesses like a pretzel, creates four or five highly questionable writeoffs to avoid paying out a penny more in taxes than he absolutely has to, he's really just "sheltering his assets."