Business Details
50+ Years
experience
Emergency
services
Your Trusted Plumbing & HVAC Partner Since 1954
Founded in 1954 by Paul Schlosser, Sr., Schlosser & Associates has evolved from a local plumbing service into a trusted provider of comprehensive mechanical contracting solutions. Our family-owned business has maintained a steadfast commitment to technical excellence, common-sense pricing, and personalized service across three generations. With expertise in residential, commercial, and industrial projects, we specialize in heating, ventilation, air conditioning, plumbing, and underground piping systems. Recognized with multiple industry awards, including the Delaware Business Times Family-Owned Business Legacy Award, our team combines decades of experience with cutting-edge technology to deliver reliable, code-compliant solutions.We prioritize customer satisfaction through transparent communication, preventive maintenance programs, and 24/7 emergency services. Our deep community roots and dedication to quality have sustained our reputation as a regional leader in mechanical contracting for over seven decades.
Services
Plumbing
HVAC
Heating Services
Air Conditioning
Commercial HVAC
Underground Piping
Gas Pipe Installation
Tankless Water Heater
Furnace Installation
Drain Cleaning
Details
- Year established: 1954
Highlights and features
- We have over 70 years of experience in mechanical contracting services.
- Our family-owned business maintains generational expertise and community commitment.
- We offer 24/7 emergency services at regular rates with service contracts.
- Our team holds multiple industry awards for service excellence.
- We provide comprehensive preventive maintenance agreements for HVAC systems.
What people say
Prompt and professional
Best price offered
Knowledgeable and courteous
Excellent company
Timely manner
Services
Plumbing Services
Our plumbing solutions address residential and commercial needs including water heater installation, sewer line repairs, and gas piping. We utilize advanced materials like copper, stainless steel, and PVC to ensure durable installations. Our team handles emergency leak repairs, drain cleaning, and bathroom/kitchen renovations with 24/7 availability for critical issues.
HVAC Installation
We provide complete heating and cooling system installations for residential and commercial properties. Our offerings include high-efficiency furnaces, ductless split systems, and whole-house solutions. Technicians specialize in natural gas conversions and energy-efficient replacements that reduce utility costs while maintaining optimal indoor climate control.
Emergency Repairs
Available 24/7 for urgent plumbing and HVAC issues, our emergency service maintains regular pricing with service agreements. We prioritize rapid response for heating failures, burst pipes, and air conditioning breakdowns, ensuring minimal disruption to residential comfort and commercial operations.
Preventive Maintenance
Our maintenance agreements cover HVAC system tune-ups, furnace cleaning, and plumbing inspections to extend equipment lifespan. Services include refrigerant checks, coil cleaning, and drain line maintenance, helping prevent unexpected failures while maintaining energy efficiency.
Commercial HVAC
We handle large-scale heating and cooling projects for businesses, including RTU installations and chilled water system design. Our team coordinates directly with contractors to meet project timelines while ensuring code compliance. Services cover system upgrades, emergency repairs, and preventive maintenance for commercial facilities.
People
Steve Dennis
President
President since 2013, Steve Dennis leads Delaware Contractors Association as of 2025. With 30+ years at Schlosser & Associates, he represents third-generation leadership alongside his wife Garnet and their three sons involved in operations.
Garnet Schlosser Dennis
Vice President
Co-owner and vice president Garnet Schlosser Dennis represents the founding family's ongoing involvement since 1954. She works with her husband Steve and sons to maintain the company's legacy of quality mechanical contracting services across three states.
Zach Dennis
Operations Manager
Third-generation family member Zach Dennis oversees daily operations as Operations Manager. Part of the leadership team with his father Steve and brothers Justin and Chris, he ensures efficient service delivery across residential and commercial projects.
Justin Dennis
Estimator
Justin Dennis serves as estimator, providing accurate project cost assessments for mechanical contracting services. As part of the third-generation leadership team with his brothers Zach and Chris, he contributes to the company's continued growth.
Chris Dennis
Estimator
Chris Dennis works as estimator alongside his brother Justin, supporting Schlosser & Associates' project planning process. As third-generation family members, they help maintain the company's commitment to precise, cost-effective mechanical contracting solutions.
Questions
What areas do you serve?
We provide plumbing and HVAC services across Delaware, Maryland, and Pennsylvania from our Newark headquarters.
Do you offer emergency services?
Yes, we provide 24/7 emergency plumbing and HVAC repairs at regular rates with service agreements.
Are financing options available?
Yes, we offer financing options for residential HVAC replacements and major plumbing projects.
What maintenance programs exist?
Our Triangle of Value Maintenance Agreement covers HVAC system tune-ups, furnace cleaning, and plumbing inspections annually.
How long have you been in business?
We've served communities since 1954, making us Delaware's longest-established mechanical contracting firm.
What awards have you received?
We've earned Delaware Business Times' Family-Owned Business Legacy Award and Delaware State Chamber's Superstars in Business Award.
