Hydrolevel

Hydrolevel is a manufacturer of low water cutoffs, combination controls, and water feeders for residential and commercial steam and hot water boilers, with a company history dating to 1965. Founded by engineer Michael DeLeonardis in New Haven, Connecticut, Hydrolevel supplies boiler safety controls to major boiler manufacturers as an OEM supplier while also serving the repair market through plumbing and heating wholesalers. All Hydrolevel low water cutoffs and water feeders are made in the USA at the company's New Haven facility. For heating contractors and boiler technicians specifying or replacing boiler safety controls, Hydrolevel is a primary reference brand for low water cutoff selection.

Product Lines

Safgard Series Low Water Cutoffs for Steam Boilers

Hydrolevel Safgard Series low water cutoffs interrupt burner operation when boiler water drops below the safe operating threshold in residential and commercial steam boiler systems. The Safgard line covers cycling and non-cycling models, 24V and 120V operation, auto-reset and manual-reset options, and combination low water cutoff and water feeder configurations. The Safgard 400 Series is a non-cycling steam primary low water cutoff with auto reset in 24V.

HydroStat Series Combination Controls for Hot Water Boilers

The Hydrolevel HydroStat Series combines low water cutoff protection with temperature limit control in a single device for hot water boiler applications. The HydroStat 3150 provides both low-water protection and high-temperature shutoff from one mounted control, simplifying field wiring and reducing the number of individual controls on the boiler.

Safgard Series Low Water Cutoffs for Hot Water Boilers

Hydrolevel Safgard Series hot water boiler cutoffs are adapted for the operating pressure and temperature range of hot water heating systems. Available in configurations compatible with major boiler manufacturers' control boards, Safgard hot water cutoffs serve as both OEM components and service replacements.

Hydrolevel Water Feeders

Hydrolevel water feeders automatically maintain water level in steam boiler systems by adding makeup water when the boiler water drops below the low-water cutoff threshold. Available as standalone devices or in combination with Safgard low water cutoffs.

Why Contractors Specify Hydrolevel

Heating contractors and boiler technicians specify Hydrolevel because the brand is a documented OEM supplier to major residential and commercial boiler manufacturers, making Hydrolevel a direct cross-reference for replacement controls on boilers already in the field. All Hydrolevel products are made in the USA in New Haven, Connecticut, since 1965. The Safgard Series covers both steam and hot water boiler protection, while the HydroStat Series adds temperature limit control in a single device. Hydrolevel controls are distributed through plumbing and heating wholesalers, keeping the product line accessible for emergency replacement calls and planned maintenance.

How to Choose a Hydrolevel Control

The most important decision variable when selecting a Hydrolevel control is the boiler type: steam or hot water. The Safgard Series covers both with separate model families. For steam boilers, select the Safgard model matching control voltage (24V or 120V), reset configuration (auto or manual), and whether a water feeder is needed. For hot water boilers, the HydroStat 3150 combination control provides both low-water cutoff and temperature limit functions from a single device. For water feeder selection, specify a standalone feeder when the existing cutoff lacks an integrated feeder. Consult the Hydrolevel OEM cross-reference for model-specific compatibility.

FAQs

Where are Hydrolevel products manufactured?
All Hydrolevel low water cutoffs and water feeders are made in the USA at the company's facility in New Haven, Connecticut, where Hydrolevel has manufactured boiler safety controls since 1965.

What warranty does Hydrolevel offer?
Hydrolevel warranty terms are available through authorized plumbing and heating supply wholesalers.

What is the difference between the Safgard Series and HydroStat Series?
Safgard Series controls are dedicated low water cutoffs for steam and hot water boilers. HydroStat Series controls combine a low water cutoff with a temperature limit controller in a single device for hot water boilers where both safety functions are needed in one mounting location.

What Hydrolevel low water cutoff is right for a residential steam boiler?
The Hydrolevel Safgard 400 Series is a non-cycling steam primary low water cutoff with auto reset in 24V, suited for residential steam boilers with a 24V control board. Verify the boiler's control voltage and wiring diagram before selecting the specific Safgard model.

Are Hydrolevel low water cutoffs compatible with major residential boiler brands?
Hydrolevel has supplied low water cutoffs as OEM components to major residential and commercial boiler manufacturers and publishes cross-reference documentation matching Safgard and HydroStat models to specific boiler brands, available through heating supply wholesalers.

Can a Hydrolevel low water cutoff replace a failed OEM control?
Hydrolevel Safgard Series controls are designed as both OEM components and field-replacement parts. Where Hydrolevel was the original OEM supplier, the same Safgard model is the direct replacement. For competitor replacements, use the Hydrolevel cross-reference table. Always verify voltage, connection type, and reset configuration before installation.