OneFlow Case Studies -

This four diamond hotel in downtown Windsor, Ontario with 758 guest rooms and a 100,000 square foot state of the art convention centre prides itself on providing an “essence of indulgence, comfort and luxury” in “masterfully appointed guest rooms and suites.”

Scope :

Provide scale control for 21 humidifiers that support one of two hotel towers and supply water to the hotel kitchen.

Challenge :

Prevent scale build up on Nortec ACS7W humidifiers from high (8 GPG) hardness levels in the city water.

Solution :

Watts OneFlow® Anti-Scale systems, Model #OF844-12×12 (144 GPM)

Results :

In a comparative analysis between humidifier treated with OneFlow® system and an equal capacity humidifier without, after 300 operating hours there was no scale build up on the heating elements and considerably less scale formation on the walls and bottom of the treated unit. Caesars Casino decided to install OneFlow® units in front of all 21 humidifiers in the west block of the building as well as the supply water for the kitchen, The OneFlow® system has eliminated water related scale issues and saved the customer money in both maintenance and energy costs.

Quisling Terrace Apartments

Quisling Terrace Customer :

60 unit apartment reidence in Mansion Hill district of Madison, WI

Scope :

Scale prevention system to protect domestic water heaters, valves and plumbing fixtures within a historic apartment complex.

Challenge :

To prevent damage of equipment from extremely high (30 GPG) hardness levels in Madison City Water.

Solution :

Watts OneFlow® Anti-Scale system, Model #OF1465-50 x2 (100 GPM)

Results :

OneFlow® protects water heaters, valves and fixtures from hard water scale build up where the previously installed scale inhibiting device has failed.

Tucked away in the Mansion Hill District of Madison, Wisconsin, the Quisling Terrace Apartments boasts a classic exterior and classy interior, describing itself to prospective residents as “a home you will be proud of.” In order to ensure the class and pride extended to the quality of its water, the apartment complex set out in 2007 to find a water quality solution the would protect domestic water heaters, valves and plumbing fixtures from the effects of extreme hard water.

A familiar Madison landmark built in 1980, the Quisling Terrace was originally a house, but was successfully converted into an apartment building and then a mid century health clinic. In 2000 it was renovated back into a sixty unit affordable housing apartment building. Though the building did include the original scale inhibiting device, it was not equal to the task of dealing with the 30 grains per gallon of hard water minerals. Though it was compact in size and low cost, the system did not effectively stop scale build up and corrosion. The complex had to replace eleven water heaters over 7 years and had numerous complaints from residents about lime and scale on fixtures.

Looking for a similar low cost, compact solution that would be effective in preventing scale, manager Kat Gallagher chose the OneFlow® Scale Control System. Overnight the complaints from tenants ceased. So, too did the maintenance and service requirements. Further, the system has the desired small footprint and does not use any expensive or high maintenance chemicals. It has operated continuously and without complaint since its installation in December 2007.

Crowne Plaza La Concha

Crowne Plaza Customer :

Crowne Plaza La Concha, located on Duvall St. in the heart of Key West, was built in 1926. Rich in history, it has been home to famous writers and jet setters. Today the popular hotel books rooms year-round at 90% of capacity.

Scope :

The hotel’s goal was to control scale in its seven-story hotel, including 160 guest rooms, pool, laundry facilities, three bars and a restaurant.

Challenge :

Reduce unscheduled maintenance and increase the life of capital equipment.

Solution :

Watts OneFlow® Anti-Scale Systems, Model # OF1665-75 x4 (300 GPM).

Results :

In addition to a 90% space footprint reduction, the hotel has reported no visible scale in fixtures and capital equipment since its installation in 2007.

Keeping water flowing freely and safely for guests is a priority for any hotel, but for the Crowne Plaza La Concha, in the heart of Florida’s Key West, hard water and scale buildup were serious concerns. Key West receives the bulk of its water from a pipeline which pumps notoriously hard water from the Biscayne Aquifer in the Florida Everglades. “You could visibly see the scale,” says Chief Engineer Daniel Betlewicz, “On the sinks, but especially in the back of the house…and in the laundry area where water was used on a daily basis.” Maintenance on capital equipment, such as water heaters, had to be done regularly, and opening them up, the La Concha engineers would find clumps of scale build up that needed to be scraped out, wearing on and potentially damaging equipment over the long-term.

Betlewicz describes the decision to go with OneFlow from Watts as a “no-brainer”. In addition to it scale control and low water waste, it was just the compact solution the retrofit needed. “This system actually fits my boiler room,” the Chief Engineer explains. “We’ve got limited space because the building is old. This system is very compact. It’s just four tubes…a perfect fit.”

Five years later the system is viewed as a huge success, saving La Concha time and money. “This is a good solution for every hotel,” says Betlewicz. “No one calls me for any scale problems, anymore. A couple months ago, we had to replace the motor on one of our domestic pumps, and when the contractors took the system apart it showed no sign of scale inside, at all. Even the contractors were surprised, you know, cause there’s usually something. And we have no problem with water heaters or anything. We were pretty happy because I was expecting something, you know…and it was clean.”

Embassy Suites Hotel

Embassy Suites Customer :

The Embassy Suites Napa Valley hotel is located in the heart of Napa and Sonoma Wine Country, conveniently located near historic downtown Napa.

Scope :

The 205-room hotel, situated on seven acres of beautifully landscaped grounds, is also home to the Grille 29 Napa restaurant.

Challenge :

Embassy Suites needed to address moderately high (5 GPG) hardness levels in their water. Their existing water softener for the hot water supply failed and needed to be replaced. The hotel was looking for a more economical solution to replace their water treatment system.

Solution :

Watts OneFlow® Anti-Scale Systems, Model # OF1665-75 x3 (225 GPM total).

Results :

After two months of OneFlow service, the hotel was already happy with its cost savings. The Chief Engineer also reported guest room sinks and faucets with visibly less scale build up. In addition, a boiler inspection report read, “No scale or any other types of deposits on internals of heat exchanger.”

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