Hot Water Circulation SYSTEM EFFICIENCIES

 PROFIT-BASED ENGINEERED VS. EFFICIENCY-BASED ENGINEERED

 

PRICE-BASED ENGINEERED Comfort Valve Hot Water Circulators

According to nearly 100 trade professionals attending the 2006 Southern California PHCC trade show, homeowners with thermostatic valve circulation systems experience excessively high monthly gas bills and waiting for cold water.  A better understanding of these systems clearly identifies the costly inefficiencies inherent with these systems.  Comfort valve hot water circulators utilize a pump installed at the water heater connected to the hot water supply pipe. By design, these pumps must run continuously (continuous energy consumption) to prevent the "normally-open" thermostatic valve from opening. It should be noted that heater mounted pumps often have narrower connection fittings than the water heater's actual pipe reducing flow capacity and load fulfillment capabilities.

 

 

One owner of this type system stated; 

"I actually turned the circ pump off... otherwise I end up with very hot water on my cold side and it can take a minute or to to cool off."

Thermostatic comfort valves or sensor valves install under sinks connecting the homes hot and cold water lines together. Material within these valves expand and contract (open / close) depending on the temperature of the water contacting the valve. These "normally open" thermostatic valves close when 95F degree water contacts the valve, preventing hot water from entering the cold water lines.  This being true also means anytime less than 95F degree water contacts the valve the valve will be open. Any use of cold water, i.e. toilet flushing, watering lawn, etc. drops the water pressure in the cold water lines but, not the hot water lines. The higher pressure in the hot water line force's water to siphon through open thermostatic valves and into the cold water line even though you intended to only use cold water. Until 95F degree water from the water heater reaches and closes the valve the homeowner is left waiting for cold water. It's important to remember that any amount of water siphoned into the cold water line is instantly replaced at the water heater with very cold city water.  Thus, repeatedly placing significant needless additional demand on your water heater when using cold water. 

 

WATCH ANIMATION OF INEFFICIENT PASSIVE FLOW CONTROL

 

PASSIVE "Normally Open" THERMOSTATIC COMFORT VALVE

 

 

Comfort Valve in Default "Normally-Open" Position

Cold water use results in crossover siphoning due to the drop in water pressure throughout the cold water pipes. 

Users must wait for 95F degree water from the water heater to contact and close valve before receiving water exclusively from the cold water pipe.

 



 

 

 

   

hot water circulation, instant hot water, hot water recirculator

 

EFFICIENCY/CONSUMER-BASED ENGINEERED HOT WATER CIRCULATOR

RedyTemp's circulators were designed using strict engineering discipline targeting efficiency and comfort while refusing to sacrifice a consumer's quality of life by cutting corners. RedyTemp circulators incorporate intelligent green control technology eliminating numerous inefficiencies found in other circulators. RedyTemp is engineered with two distinctly separate flow controlling devices. A self-cleaning calcium proof, hard water friendly check valve and a silent-action stainless steel "normally closed" solenoid valve, preventing inefficient hot water line siphoning. RedyTemp eliminates the noticeable discomfort, inconvenience and energy waste that occurs with thermostatic crossover valves and one-way check valves, minimizing demand on the water heater while maintaining greater cold-water comfort. Professionals and homeowners appreciate RedyTemp's temperature-based cyclic pumping increasing pump and water heater life cycle while reducing energy consumption.

 

EFFICIENCY-BASED vs. PRICE-BASED ENGINEERED HOT WATER CIRCULATORS

 

REDYTEMP EFFICIENCY-BASED

PRICE-BASED ENGINEERING

COMFORT

Hot water at your chosen "dialed-in" comfort temp

Stuck with whatever comes out  / coin toss ...

CONVENIENCE

2 x convenience and customizable activation to perfectly match even complex lifestyle

Scheduled or Always-On

CONTROL

No HWL siphoning during CW use, delivers water ONLY from cold water line,

Cold water use delivers warm mix of hot and cold line water (bleed-over / siphoning)

PUMP ENERGY

Temperature based "cyclic pumping" = avg 10 min runtime per hour enabled

Non-stop continuously operating pump

EFFICIENCY

Unmatched industry record efficiency, comfort and savings

HWL siphoning makes toilet use, watering lawn, etc. consume water from both hot and cold water lines*

TECHNOLOGY

Normally-CLOSED Positive Flow control via solenoid and check valve

 "Normally-OPEN" crossover valve permits siphoning of hot water line during cold water use

LIFECYCLE

Temp based "cyclic-pumping",  makes for longer life of both circulator and water heater

pumps running continuously, inefficient HWL siphoning makes for shorter life span of both pump and hot water heater

*when less than 94F water leaves crossover valves open                 

 

A GREENER HOT WATER CIRCULATOR SYSTEM