About RTH Mechanical Contractors Inc.

With more than 30 years’ experience, RTH Mechanical Contractors Inc has established a strong reputation for high-quality workmanship, competitive pricing, and professional services.

RTH is a veteran-owned small business (VOSB) made up of a team of fully licensed and insured mechanics (in pipefitting, plumbing, and med gas) and ASME certified welders (QA Program ASME B31.1).

In addition to providing quality commercial construction and renovation services, RTH also offers professional project management and design services, as well as commercial HVAC and plumbing services.

Our Mission

RTH Mechanical Contractors Inc is committed to performing quality work on commercial construction and renovation projects and providing the client/contractor with the best products and service available. Our ultimate goal is to complete each project knowing that we’ve not only fulfilled the client’s requirements but that we’ve also helped the owner to achieve a high comfort level for operating and maintaining the new/updated systems.

Our Capabilities

General Mechanical Capabilities

  • Low-Pressure Boiler / Cast Iron and Package Boilers
  • High-Pressure Boilers
  • Water Boilers, High, and Low Temperature
  • Feed Systems
  • Deaerators
  • Condensate Systems
  • Underground Double Wall Steam Distribution System, High and Low Pressure, and Chilled Water Piping
  • Welded Breaching installation
  • Steam Piping, High and Low Pressure
  • Process Piping including Stainless 304L to 316L, Argon Purged
  • Tubing, Stainless Steel, Copper and Pneumatic Poly
  • Licensed Plumbers, Pipefitters, Welders, A/C Service Mechanics, Medical Gas Certified
  • QA Program- ASME B31 (Program accepted by Department of the Navy)
  • Complete Plumbing System Design and Installation
  • Millwrights
  • “R” Stamp Capabilities
  • Chiller Replacements and Rooftops
Mechanical Department Capabilities

  • Mechanical Department Capabilities
  • VAV and Constant Volume HVAC Systems
  • Total Hydronic Heating System Installations and Replacements
  • Computer Room Cooling
  • Centrifugal, Reciprocating, Air and Water-Cooled Chiller Replacement and Installation
  • Process Cooling and Heating
  • Commercial, Industrial and Process Piping Installation, Repair, and Replacement
  • Laboratory Hood Exhaust and makeup Air Systems
  • Compressed Air Systems
  • On-site Facility Services
  • Automatic Controls for Comfort Cooling, Ventilation Exhaust and Process Systems, both Pneumatic and Direct Digital Control
  • Fixed price service contracts or T&M projects

Our Management Team

Meet the RTH Mechanical Contractors Inc Management Team! Our management team and the entire company is made up of a close-knit and collaborative group of professionals.

Richard Hansell, President

Richard entered the mechanical and plumbing industries about 50 years ago, starting with a 4-year apprenticeship, and gradually working his way up to Plumber/ Pipefitter/ Welder/ Foreman before opening RTH Plumbing & Heating in 1986. In 2009, the company changed its name to RTH Mechanical Contractors Inc. Under Richard’s leadership, the company has grown to over 60 employees, with work expanding into four states on the East Coast.

Dana Covey, Senior Project Manager

Dana began his career in the plumbing and pipefitting industry over 40 years ago, holding positions from Mechanic to Project Engineer, and everything in between. He has managed a variety of projects, ranging from schools, prisons, and hospitals to the more complex systems in manufacturing, industrial and steam power plants (oil, gas and coal-fired). At RTH, Dana oversees project scheduling and coordination and supervises manpower & safety.

Steven Sacharczyk, Senior Project Manager

Steven (Steve) has over 20 years’ experience in the construction industry, with a course study in Plastics and Chemical Engineering. He completed the Plumbers and Pipefitters Apprentice Training Program and quickly advanced from Journeyman up to General Foreman. At RTH, Steve estimates commercial and industrial projects and manages RTH field personnel, overseeing the management of each project from beginning through completion.

Bryan Covey, Project Manager

Bryan began his career in the plumbing and pipefitting industry over 30 years ago, holding positions from Mechanic and Service Tech to Project Estimator, and now Manager. Bryan has managed projects ranging from light commercial projects such as schools, office renovations and retro-fit-ups to large commercial projects including hospitals, manufacturing and industrial sites. At RTH, Bryan oversees project estimation, management, schedules and coordination of projects.


We look forward to working with you on your next project.

Equal Opportunity Employer

RTH Mechanical Contractors Inc provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, gender, national origin, sexual orientation, gender identity, age, mental or physical disability, veteran status, genetics, or any other protected status or characteristic. In addition to federal law requirements, RTH Mechanical Contractors complies with applicable state and local laws governing nondiscrimination in employment. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training. Our policies and practices ensure that all job applicants and RTH Mechanical Contractors Inc employees have equal opportunities in every aspect of employment activities, including recruitment, selection, promotion, training, and termination. Equal Employment Opportunity practices prevent discrimination and harassment.

RTH Mechanical Contractors’ affirmative action and equal opportunity policies and procedures require fair hiring practices and positive action in building and accommodating a diverse and representative workforce.

VEVRAA Federal Contractor

RTH Mechanical does not discriminate against any employee or applicant for employment because he or she is a disabled veteran, recently separated veteran, active duty wartime or campaign badge veteran, or Armed Forces service medal veteran, in regard to any position for which the employee or applicant for employment is qualified. RTH takes affirmative action to employ, advance in employment and otherwise treat qualified individuals without discrimination based on their status as a protected veteran in all employment practices.

Disability Accommodation

RTH Mechanical Contractors Inc provides reasonable accommodation for individuals protected by Section 503 of the Rehabilitation Act of 1973, the Vietnam Era Veterans’ Readjustment Assistance Act of 1974 and Title I of the Americans with Disabilities Act of 1990.

Placement Goals

RTH Mechanical Contractors Inc encourages females and minorities to consider training for and entering the Pipefitter trade. Qualified applicants please contact us.

17 Production Drive
Dover NH 03820

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