Difference between automatic demand and switched pumps - Fiberglass RV
Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×

Thread Tools Search this Thread Display Modes
Old 04-11-2011, 07:10 PM   #1
Senior Member
GordM's Avatar
Trailer: Boler 13 ft 1972
Posts: 103
Difference between automatic demand and switched pumps

Hi everyone! It's been a long cold winter and I'm back on the "need a pump" for my Boler. So I have been looking at pumps, and what is the pros and cons of automatic demand pumps, versus inline switched pumps? I've been looking for a low amperage pump, and most of the small stuff that is sold up here in Canada uses a switch. Any opinions either way? Thanks everyone!
GordM is offline   Reply With Quote
Old 04-11-2011, 07:16 PM   #2
Senior Member
honda03842's Avatar
Name: Norm and Ginny
Trailer: Scamp 16
Posts: 7,513
Someone correct me if I'm wrong, but I think all RV pumps are demand pumps. They only pump water when you turn a open a water valve, at a sink or at the toilet. The switch is simply a convenience device to allow you to shut it off so it doesn't come on at all.

As to amperage, I never worry about it too much because even when you're using th pump it doesn't come on very often.

honda03842 is offline   Reply With Quote
Old 04-11-2011, 09:17 PM   #3
Senior Member
Name: Peter
Trailer: 1971 Amerigo
Posts: 252
The pump in my Boler is controlled by a switch and if on runs constantly. It's a crank arm type pump with a rubber bellows - and it's loud enough to wake the dead.
I'm looking for a good demand pump as well...ideally one that's quiet :~)
Peter_Crowl is offline   Reply With Quote
Old 04-12-2011, 01:01 AM   #4
Trailer: No Trailer Yet
Posts: 61
I am planning on installing a manual foot pump in addition to my demand pump. this is what I have on my boat and I think it makes a lot of sense. First, it use no power, just a little foot power. Also you only pump what you need - no wasted water while turning on or off the faucet. You also have your hands free while pumping the water.

I find it much better for washing hands and brushing teeth. I will still have the demand pump for getting hot water and washing dishes. The pump I will use is a marine pump called "Baby Whale Gusher foot pump".

slbran is offline   Reply With Quote
Old 04-12-2011, 04:52 AM   #5
Senior Member
GordM's Avatar
Trailer: Boler 13 ft 1972
Posts: 103
So for a switch pump, you have to turn on the switch, which turns on the pump and then you can open the taps? Hmm, I have to then wire up the switch and the stuff I got to buy for that will be about equal to the difference I'd be saving.

Another question - do any of you use or have an accumulator as well? Or do you run from the pump to the taps etc?
GordM is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Coleman Hot Water On Demand mcbrew General Chat 7 11-03-2010 11:39 AM
On Demand Water Heaters melissab General Chat 10 09-22-2010 11:53 PM
Automatic vs. Manual Transmission Mailie Towing, Hitching, Axles and Running Gear 8 06-19-2010 05:30 PM
Automatic Transmission Stuf Pete Dumbleton General Chat 0 05-01-2008 09:11 PM
Automatic Transmission Fluid Temperatures Pete Dumbleton General Chat 1 03-04-2008 04:53 PM

» Trailer Showcase




» Upcoming Events
No events scheduled in
the next 465 days.
» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 03:49 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.