• Increased ventilation is one of the recommended strategies during these times.

    Have you benchmarked your facility’s ventilation rates?

    Continue reading “”

  • Hottel Client Raves About Customer Service

    Hottel has always strived for excellent customer service, which is accomplished through learning from our employees and clients. For the past 15 years years, our Senior Sales Associate, Mike Hollidge, has built a strong client relationship with the Chief Engineer of Rubenstein Properties, Ozzie Acosta. Ozzie, along with his coworker, Jimmy Martinez, reached out to Hottel for mechanical maintenance and replacement of cooling towers at a building they manage in Rockville, MD.  Starting the submittal process two years ago, Hottel has worked closely with Rubenstein Properties on contract changes and adjustments before kicking off this project. When interviewed, Jimmy emphasized how well our entire team (sales, mechanical, techs, and administrative) works together and communicates throughout the project process.

    He stated, “Everyone at Hottel has been very prompt and really knows what they are doing. We are almost at the point where we just hand over our key and let them go take care of whatever needs to be done.”

    It’s great to hear that our clients think that Hottel and its employees are trustworthy and are going above and beyond for customer satisfaction. We look forward to all future projects!

    Replacement of Cooling Towers

    Installing Cooling Towers



  • Sandy Spring Museum

    One of Harvey Hottel’s top priorities is to make sure that we are doing the best we can for our customers. Part of that is tracking that we and the units installed are beneficial to your initiatives.  Air Advice allows us to just do that. Harvey W. Hottel, Inc uses high-tech sensors to track the air flow, ventilation, humidity, and carbon monoxide within our clients buildings.

    We preformed a walk through of the Sandy Spring Museum using diagnostic monitoring equipment and visual inspection to identify the opportunities for improving the energy and comfort performance of the building. Our key findings highlight what we discovered in the process:

    Key Findings:

    1. Relative humidity in the archive room is being maintained in the acceptable range (between 30-55% relative humidity).

    2. The installation of the dehumidifier is providing the ability to remove excess humidity, which the system was not capable of in the past.

    Opportunities for Improvement:

    1. Consider additional thermostat in archive room to provide less temperature spread across the room.

    2. Continue to monitor humidity and temperature levels during the warmest months. A final Sensor Data Assessment will be provided (at no additional cost) during this period to insure system control is maintained.

    Our team worked closely with Sandy Spring Museum to identify the problem areas, so we could develop solutions. They building is now running more efficiently with reduced humidity levels.

    Sandy Spring Museum

  • Eliminate Air Borne Particles


    We have recently had a lot of interest in and success installing UV lights to provide additional health and safety through air supply decontamination for tenants/building occupants returning to work.

    Now is an excellent time to stay updated on building maintenance such as:

    1. Filter Changes: Changing filters regularly to ensure air flow is kept up to acceptable levels. Upgrading your filters to a higher MERV rating can increase the amount of particles captures during circulation.
    2. UV Light: When passing through UV light, viruses and other bacteria are effectively killed by the ultraviolet light.
    3. Evaporator Cleaning: Utilizing an evaporator coil cleaner and disinfectant is effective against killing germs on hard, non-porous surfaces.
    4. Ventilation: Completing an assessment on your current ventilation rates and possibly making improvements to your air changers per hour.
    5. Humidity Control: Maintaining a humidity level of 40-60% in an indoor facility can lower the survival rate of airborne viruses up to 30%.
    6. Portable Air Purifiers: We can supply air cleaners that utilize HEPA filtration and UV lights for portable disinfection. This can be used to augment systems that cannot provide adequate airflow in certain areas within your facility (CDC, 2020).

    Please do not hesitate to contact our Commercial Service Department at 240-912-8900 to discuss keeping your facility at its optimal health level. We hope that you and your families are safe and healthy during these uncertain times.

  • Saint Sophia’s Church Writes a Great Testimonial

    St. Sophia's Church in the DC Metropolitan AreaHottel is always looking forward to hearing from our clients and about the work we have done. We continuously work with Saint Sophia’s Church on maintaining their equipment and installing new equipment if needed.

    “After researching and interviewing several HVAC companies in our area we decided to go with Harvey W. Hottel, because they are a reliable company and they presented us with great choices and pricing that fit our Cathedral needs. I was especially pleased by the explanation of the way the new unit would be installed and how it would work. As well as other HVAC and plumbing issues we had.

    We were very pleased with the service we received from Harvey W. Hottel. Kenneth Fennell and the installers were very knowledgeable and professional. They were very attentive to our needs and answered all of our questions and concerns. Richard Hottel and crew should be very proud! 

    The technicians were on their game and repaired the work in a timely fashion. We are extremely satisfied! Kudos to the Hottel team.”

    Pete Panagiotopoulos
    Saint Sophia Cathedral, WDC
    Cathedral Administrator

  • Strawbale House with Geothermal Heating and Cooling

    Beautiful passive solar home with geothermal heating and cooling that has a net-zero footprint. This house is built from resources that we found right on the land where it’s located; strawbale walls that surround 3,500 SF of space with a mud mixture for the walls. Trees from the property, such as black walnut, cherry, locust and hickory are used throughout for ceilings, flooring, doors, and other accents. We worked closely with the owners and designer to strategize on the installation of geothermal heating and cooling, high efficiency triple pane windows, radiant flooring, tub, master bedroom and gym. We also installed a 3-ton water to water unit with a storage tank and a hot/cold water coil for the air handler. Take a look at the before and after pictures!

    Strawbale House with Geothermal HVAC

  • Jump onto the Bandwagon with VRF’s

    The FEMA National Emergency Training Center needed a partner to install 32 tons of VRF (viable refrigerant flow). FEMA quickly turned to Harvey Hottel to fulfill the task. Our Project Executive, Scot Hottel, developed a plan and executed flawlessly. He worked closely with the stakeholders to ensure success.

    This project was completed with minimal disruptions to their facility members, which was a mandatory request. From maintaining the project timeline, ensuring a quality installation, to keeping the occupants informed, Scot was able to deliver another success.

    VRF systems are increasingly becoming more popular especially in larger urban areas where space in premium. According to Arista.com (2017) there are 7 major benefits for installation of VRF systems:

    1. Consistent Comfort – these systems can accurately identify the exact amount of refrigerant needed to each air handling unit.
    2.  Quiet Operation – smaller air handlers, which means smaller noise amount.
    3.  Energy Efficiency – precise amount of refrigerant needed so it can run at a lower capacity and less frequently.
    4.  Installation Flexibility – VRF’s are compact systems designed to travel lightly, no ducts and are space effective.
    5.  Heat and Cool Simultaneously – has the ability to capture heat recovered from the cooling process and redistributed into another area that needs it.
    6.  Controls and Smart Technology – can be controlled and maintained through a mobile device.
    7.  Fewer Breakdowns – less stress on the parts because VRF’s are designed to run only when necessary, which leads to fewer breakdowns.




  • We Speacialize In Geothermal Heating and Cooling

    DID YOU KNOW: Geothermal energy has the smallest carbon footprint of any other heating or cooling source. It can also be eligible for tax cuts and maintains a longer lifespan of 25 years for indoor and 50+ years for outdoor underground components (Comfort Pro Inc., 2019).

    Mark Hottel, Owner and Designer, and Mike Kephart, Project Manager, specialize in geothermal energy. Cost savings for monthly operating expenses coupled with new Federal tax credits offered,  provided our homeowner with the incentive to procure the benefits and comfort of geothermal heating and cooling.

    The scope of work included four new geothermal heating and cooling units with associated sheet metal ductwork, geothermal piping, electrical, and controls. Additionally, two geothermal water-to-water units provided the hot water for the radiant floor heat for the following areas: basement, garage, and master bathroom.

    From maintaining the project timeline to ensuring a quality installation, the Harvey Hottel team was able to deliver another quality project. Contact us today!


    Geothermal HVAC in Gaithersburg