Some Time Less vaccum is better option.

[Jim Davisson]

I think you have to care about all three. Some think extreme water lift is the sole answer to vacuum performance. Its a balance of both lift and cfm.

The guys stringing 3-400' of hose regularly want high lift blowers not venting at 14" Hg at the worst spot... at the tank decreasing cfm to the wand. The average Joe stringing a hundo for residential doesn't need water cooled 20" Hg, just good operating lift over 10" Hg at the wand. Blowers with big shoulders have no problem transmitting lift and cfm over distance when setup right and using bigger diameter hose in the first few legs of the run. These same guys need 250° at the machine to keep even 180° at the wand on these long strings.

Many moons ago we use to clean a hospital section that we only used the TM for solution line and used the portable with an apo with 50' of 2" to extract (pumping out into a brute can on wheels) that moved with the portable. Much better performance, speed, setup and breakdown than the TM could do alone at ridiculous hose runs with way better dry times. The carpet was in house interim bonneted with old school pH 11 bonnet cleaner and didn't require prespray, just water to prespray and good to go with no foaming in the tank, cleaned up fantastic. Had plenty of cleaning power already in the fibers lol

 

[Bob Savage]

The guys stringing 3-400' of hose regularly want high lift blowers not venting at 14" Hg at the worst spot... at the tank decreasing cfm to the wand. The average Joe stringing a hundo for residential doesn't need water cooled 20" Hg, just good operating lift over 10" Hg at the wand. Blowers with big shoulders have no problem transmitting lift and cfm over distance when setup right and using bigger diameter hose in the first few legs of the run. These same guys need 250° at the machine to keep even 180° at the wand on these long strings.

Many moons ago we use to clean a hospital section that we only used the TM for solution line and used the portable with an apo with 50' of 2" to extract (pumping out into a brute can on wheels) that moved with the portable. Much better performance, speed, setup and breakdown than the TM could do alone at ridiculous hose runs with way better dry times. The carpet was in house interim bonneted with old school pH 11 bonnet cleaner and didn't require prespray, just water to prespray and good to go with no foaming in the tank, cleaned up fantastic. Had plenty of cleaning power already in the fibers lol

I have done the same thing by running the steam line from the van (propane heat), and using a portable for extracting.

That is what gave me the idea for designing a modular electric truckmount many moons ago.

Just used that ETM today and it still performs better than a lot of gasoline straight up truckmounts.

 

[Jim Davisson]

I have done the same thing by running the steam line from the van (propane heat), and using a portable for extracting.

That is what gave me the idea for designing a modular electric truckmount many moons ago.

Just used that ETM today and it still performs better than a lot of gasoline straight up truckmounts.

I wish I had your apo back in the late 90's and early 2000's. I ran a shurflo pump in the motor compartment sucking through a 10" window screen barrel with hose clamps holding it together and a rule 12v float in the tank operating at 120v. Worked good, but not like your pond pump apo with vertical float. Night and day difference!

 

[Chris K]

Everyone has a preferred narrative. The big TM guys justify their big machines and the little TM guys chirp about not needing bigger and cite scientific theories.

I just think for myself and do some redneck testing for myself. For residential hose runs, I've found my newer 36 blower dries carpet just as fast as our other machine that runs a 45 blower at 3600 rpm. On paper, the 45 blower should be pulling around 80-90 more CFM, but that doesn't seem to translate to a difference on the carpet with a Bentley wand. Again, we are talking only 100-150' hose runs. I'm sure longer hose runs would expose the difference, but we only VLM those sort of jobs.

If I ever feel I need to reach out 200' and more... I'll just buy a booster and be done.

 

[Calgary Hog]

Great vedio explanation . Enjoy