PV Plumbing & Water Inc. employee stands by service van.

Constant Pressure

Looking for constant city like water pressure from your well pump? Constant pressure drives are the solution.

PV Well Water Services offers new constant pressure drive sales, installations and repairs in rural Ottawa and the surrounding area.


About Constant Pressure Systems

The heart of a constant pressure system is the constant pressure drive, also known as a variable frequency drive (VFD). These drives replace a pressure switch and allow for the well pump to be run at a fixed pressure. 

They basically function by spinning the pump faster or slower depending on how much water is required.  Open two more faucets, the pump will speed up. Close one and the pump will slow down.


Franklin Electric SubDrive Utility Constant Pressure Drive

Benefits of a VFD

While the biggest benefit of a constant pressure system is city like constant pressure from your well pump, a VFD also offers other benefits over a traditional pressure switch. 

Benefits like dry run protection and slow start can help protect and extend the life of your well water pump.

They can also provide other diagnostic features such as syncing to mobile devices and error codes.

Constant Pressure Sales and Service

Looking to purchase a constant pressure drive for your new or existing home in rural Ottawa?

Our licensed well technicians are experts at installing and servicing variable frequency drives such as the SubDrive from Franklin or the Intellidrive from Pentair.

They can provide you with options to ensure that your water keeps flowing reliably for years to come. 

Franklin Electric Subdrive Utility Constant Pressure System.


VFD stands for Variable Frequency Drive. They are electrical motor controls that can run at various speeds resulting in water pressure matching demand or constant pressure.

We stock the Franklin Electric SubDrive Utility in both two and three wire variants. We also install other drive from Grundfos, Franklin and Pentair such as the CU-301, Intellidrive and SubDrive Connect.

Our team is here to help! We can service multiple different types of VFDs from Pentair, Grundfos, Franklin and other brands.

We provide submersible well pump sales, installation and repairs to Ottawa and the surrounding rural areas including:

  • West Carleton (Carp, Dunrobin, Kinburn, Constance Bay, Kanata)
  • Rideau-Jock (Richmond, Manotick, Ashton, Munster, North Gower, Kars)
  • Lanark (Carleton Place, Mississippi Mills, Pakenham, Almonte)
  • Renfrew (Arnprior, Braeside, McNab, White Lake)
  • Osgoode (Greely, Metcalfe, Ficko)
  • North Grenville (Kemptville, South Gower)
  • Cumberland (Navan, Sarsfield, Vars)


Don’t see your location? Contact us to see if we’re able to service your address.

It depends on the drive and pump. Some system allow for the use of a much smaller pressure tank compared to a traditional pressure switch system. If you have a geothermal heat pump you may also have a very large pressure tank. A constant pressure drive will allow you to downsize this without fluctuating pressure.

Every system is different. Contact us for a consultation to find out exactly what constant pressure system would suit your needs and get a quote.

Yes! A variable frequency drive will help keep your pressure constant even when you’re running irrigation so long as you have water in your well and a properly sized submersible pump.

Most constant pressure drives such as the Franklin SubDrive Utility and Connect off dry run protection. This means if your well runs dry, the drive will automatically shut down your pump to prevent it from burning out.

Schedule a Constant Pressure System repair or install.

At PV Well Water Services we keep the water flowing. Contact us today with your constant pressure drive repair, installation or sales request!