New Aspen Pumps M4R and RTP Series with Water Level Float Mechanisms

Press Release Summary:

  • Features thermal overload protection and safety cut-off switches
  • M4R series offers small footprint of 11.2 x 5.6-inches and a compact height of 5.3-inches
  • RTP series consists of one 230-V and two 110-V models with 15 or 24-foot head capacities

Original Press Release:

RectorSeal® Introduces Aspen® M4R and RTP™ Series Condensate Tank Pumps

Introduction includes multiple tank pump models with cutoff switches that protect most residential and commercial unitary air conditioning, furnace, and dehumidifier applications from property-damaging condensate overflow.

RectorSeal®–a leading manufacturer of quality HVAC/R tools and accessories, and wholly owned subsidiary of CSW Industrials Inc. [Nasdaq:CSWI], introduces the Aspen® Pumps M4R Series and RTP™ (RectorSeal Tank Pump) Series of condensate tank pumps. The multiple-model introduction represents the HVAC industry’s most flexible, diverse and compact tank pump product lines for the North American unitary air conditioning, furnace and dehumidifier condensate markets.

The product line offers tank pumps for most residential and commercial applications ranging from entry level value to feature-rich, premium models all with water level float mechanisms, thermal overload protection and safety cut-off switches that inactivate the system to protect property-damaging condensate overflow.

The three-model M4R Series features a noise rating operation of less than 45-dB at one-meter (comparable to a refrigerator compressor). The Series also offers a small footprint of 11.2 x 5.6-inches (284 x 142-mm), and a compact height of 5.3-inches (134-mm). The M4R lineup’s 230-V and two 110-V models are designated by 15, 17 and 20-foot (4.5, 5.1, 6-m) head capacities. The M4R Series uses a patented impeller technology that enhances performance. The M4R Series’ IP-24 rating certifies ingress protection against objects up to 1/2-inch (12.5-mm) and sprayed water from all directions. The M4R Series also carries a two-year warranty and a >140°F (60°C) rating suitable for furnace condensate temperatures.

 The M4R’s installation aids include a built-in bubble level, four 3/4 (19-mm) or one 1-inch (25-mm) tapered PVC inlet options with covers, 6-foot-long (1.8-m) power cord, 6-inch-long (152-mm) cutoff switch wire leads and slotted mounting arms for flexible positioning. The M4R design expedites routine maintenance with two perforated, easily-cleaned plastic debris filters, power status LED and a 1/2-gallon (1.9-L) ABS plastic quick-release tank. The removable outlet check valve prevents drain backflow and is easily repaired or replaced with a unique twist-and-click lock-in design and securing retention clip.

The RTP Series consists of one 230-V and two 110-V models with either 15 or 24-foot (4.5 or 7.3-m) head capacities. The RTP’s compact footprint is 11 x 5-inches (279-127-mm) with a 7-inch (177-mm) height. Installation is quick with molded-plastic mounting arms, a 6-foot-long power cord, 10-inch-long (254-mm) cutoff switch wire leads and three 3/4-inch inlet options with covers. It features a reliable float arm design and a 1/2-gallon tank. The RTP carries a one-year limited warranty.

Complementing the tank pump product line is several existing RectorSeal condensate maintenance products: Actabs™ EE EPA-registered biocide bacteria, sludge and odor eliminator; Nu Line® non-corrosive, non-fuming condensate drain cleaner for preventing clogs and leaks; and LineShot™ drain line CO2 pressure flush device for use with Safe-T-Switch Model SC1 cleanout.

Installation and service instruction for both the RTP and M4R Series are available free with On-Demand Training with RectorSeal, a free program for individuals or groups of HVAC service technicians. Participants can sign up for 20 to 40-minute interactive online classes at with RectorSeal’s NATE-certified product trainer, Jerry Myren. Registrants receive a confirmation email and receive an invitation on their Google, Outlook or other calendar options. Training is also available with the new RectorSeal Academy, a cloud-based platform of self-directed e-learning courses that operate easily on all computer devices and smartphones.

For additional information on RectorSeal’s tank pump product line, please visit; email:; or call 800-231-3345. 

About RectorSeal:

RectorSeal LLC, a CSW Industrials company, is a manufacturer of chemical, mechanical and firestopping products for the professional trades. RectorSeal is centered on a simple mission: To provide innovative solutions to the professional trades. RectorSeal wants to provide professionals in the HVAC/R, plumbing, electrical and construction industries with reliable products that increase tradespeople’s efficiency. Founded in 1937, RectorSeal originally focused on manufacturing specialty chemical sealants. One of our first products, RectorSeal Number 5, became a staple of the plumbing industry, serving as a common thread sealant throughout the U.S. Since these beginnings, RectorSeal has continued to grow by expanding its offering of chemical and mechanical products to support tradespeople. Today, RectorSeal has developed a robust line of chemical, mechanical and firestopping products, which are distributed through an extensive wholesale distribution network. Primary products include thread sealants, firestopping sealants, plastic pipe cements, anti-seize compounds, fluxes, lubricants, chemical cleaners, duct sealants, leak locators, and other specialized products. Many of these products have a strong following among tradespeople due to solution focused development and differential performance. For more information on RectorSeal HVAC/R, plumbing, firestop and electrical products, customers can contact or +1 713-263-8001.

About CSW Industrials:

CSWI is a diversified industrial growth company with well-established, scalable platforms and domain expertise across two segments: Industrial Products and Specialty Chemicals. CSWI's broad portfolio of leading products provides performance optimizing solutions to its customers. CSWI serves numerous end markets including: mechanical products for heating, ventilation, air conditioning, and refrigeration applications (HVAC/R), sealants, and high-performance specialty lubricants. Markets that CSWI serves include: HVAC/R, architecturally-specified building products, general industrial, plumbing, rail, energy, and mining. For more information, please visit

Delicia Shyu
Marketing Comm. Director
RectorSeal LLC
(800) 231-3345

John Parris Frantz
J.P.F. Communications
(773) 871-2600

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