What are the opening hours?

Monday 7:30am - 4:30pm Tuesday 7:30am - 4:30pm Wednesday 7:30am - 4:30pm Thursday 7:30am - 4:30pm Friday 7:30am - 4:30pm

Controls Service & Engineering Co., Inc.

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United States
Mifflintown, PA
Controls Service & Engineering Co., Inc.

Controls Service & Engineering Co., Inc. (CSE) in Mifflintown (formerly Richard S. Mills, Inc.)

provides cost-saving commercial & industrial HVAC maintenance & repair, plumbing, and refrigeration services in the Mifflintown, PA area.

12/24/2025

Happy Holidays!

As the year wraps up, we are taking a moment to appreciate the people who make our work so meaningful. The trust of customers and the dedication of a hardworking team are what keep projects moving and standards high every day.

These relationships are the foundation of CSE’s success, and we are grateful for the opportunity to work alongside so many great partners throughout the year.

From everyone at CSE, warm wishes for a happy holiday season and a strong start to the year ahead.

06/23/2025

Thank You to Our HVAC Pros - Especially This Week!

🌡️ As the first heat wave of the season rolls in, we want to take a moment to recognize our incredible HVAC Technicians - especially in honor of National HVAC Technician Day, which was yesterday!

Your work is essential, and often unsung. Whether you're installing, repairing, or responding to emergency calls in sweltering heat, you keep our customers comfortable and their operations running smoothly. We can’t thank you enough.

💪 Stay safe out there: hydrate often, take breaks, and don’t hesitate to ask for help when needed. We’ve ordered cooling towels and will be distributing them this week to help beat the heat.

Thank you for everything you do - today, tomorrow, and every day. We appreciate you more than you know. 👏

Finally, let’s not forget our amazing support staff for all they do to keep things running smoothly behind the scenes. Big shout out to you as well!

12/31/2024

Happy New Year from all of us at CSE!

As we close out another year, we reflect on the relationships that make our work meaningful. Built on trust, commitment, and shared goals, your continued support inspires us to do our very best every day.

Thank you for choosing CSE as your partner. We’re honored to serve you and look forward to a successful year ahead.

Wishing you and yours a healthy and abundant 2025!

09/05/2024

Highlights From Our 38th Annual CSE Golf Outing

We had an incredible time at our 38th annual CSE Golf Outing! This year, we had 74 participants in the Best Ball competition and 7 in the new miniature golf match. Sam’s team dominated the course with a winning score of 52, while Bob Messner edged out Kim in a thrilling 9-hole mini-golf showdown, 25 to 24. Special shoutout to Cordell for guessing the number in the "Guess the Candy" jar and winning 362 pieces of candy!

Ryan Kerstetter took home two closest-to-the-pin contest wins, and the all-CSE team of Nate, Caden, Ramon, and Wyatt came in with the lowest employee team score. The day was full of laughter, food, and prizes, with a few people already determined to sharpen their skills for next year.

Thanks to everyone who joined us! Looking forward to the 39th!

06/22/2024

Celebrate National HVAC Tech Day!

As we crank up the air conditioning this week, it's the perfect time to recognize and appreciate our incredible HVAC technicians. These temperatures remind us of the vital role our technicians play in keeping us cool and comfortable. Their expertise and dedication ensure that we stay comfortable throughout the year, whether it's keeping cool in the summer or getting cozy in the winter.

Thank you for helping us celebrate National HVAC Tech Day and for supporting the technicians who work tirelessly to ensure our comfort all year round.

(And now that the heat is here, if your facility's HVAC system is struggling, reach out to us today!)

12/22/2023

From all of us here at CSE... Happy Holidays!

This holiday season, we reflect not only on this past year, but on the remarkable journey of the last FIFTY years. A lot has changed since our founding in 1973, but our dedication to providing top-quality HVAC solutions and unparalleled customer service remains steadfast.

The enduring success we've achieved is in large part due to the unwavering trust and loyalty of our customers. It is with heartfelt gratitude that all of us at CSE express our deepest appreciation for your ongoing support.

Thank you for our continued partnership. Best wishes to you and your loved ones over the holidays and throughout the coming year!

11/22/2023

Happy Thanksgiving!

We would like to express our heartfelt gratitude to our incredible customers, our indispensable technicians and staff, and our valued partners and vendors. Your trust and support mean the world to us. This Thanksgiving, we wish you warmth, laughter, and cherished moments with loved ones.

09/04/2023

Happy Labor Day!

We're wishing all of our employees, and everyone who works hard for a living, a wonderful Labor Day. Thank you for all you do!

08/29/2023

We held our annual golf outing earlier this month. A record 43 employees, 4 retirees and a number of other family members participated in our 37th annual CSE tournament. For 12 of our employees, it was the first time at a CSE outing. We also added miniature golf for the first time!

Once again, there were some incredible shots, many more not-so-good hits, and more than a few lost balls. Fortunately, these were offset significantly by the laughs, comradery, food, and great prizes!

Thanks to everyone who came out! We're already looking forward to next year's event!

08/23/2023

CSE Celebrates 50 Years!

Fifty years ago, on August 13, 1973, T.L. Christiansen started Controls, Service & Engineering Co., Inc (CSE) on the belief that there would be a market for great service. Fifty years later, CSE still provides the same great service.

We held a celebration on August 14 to mark this major milestone, and in CSE tradition, we enjoyed great food, a lot of laughs, and countless memories. A total of 67 current employees and 7 CSE retirees attended the event.

Thank you to all of our employees and customers who have brought us to where we are today!

05/30/2023

Back in March, we were honored to host eight outstanding HVAC contractors from around the country, all part of our ACCA Mix Group. It is an amazing collection of people, and we were fortunate to have them review our operations. We look forward to putting their recommendations into effect.

Thanks to Mendy Brannon with Dalia Site Selection & Events, we were able to host a very successful meeting. She recommended Hotel Hershey, which had so much more character than we would have experienced in a traditional hotel. There was plenty of space, friendly staff, and beautiful surroundings. Plus, she saved us money when compared to the other hotels we had considered. Thanks, Mendy!

Once we were booked, Hollynn Paul from Hotel Hershey was very detailed in making sure all of our technical needs, meeting space requirements, and meals were well covered. Thanks, Hollynn!

05/09/2023

We held a retirement party for Jeff Mumma on April 19th at Liberty Forge. Jeff promises to be well practiced for the CSE Golf outing at Liberty Forge on August 6th. He and Karen plan to attend future Holiday parties as well.

Jeff Mumma first came to work for CSE in 1994 and had great relationships with his customers, coworkers and the office. He was always willing to take any call or help anyone who needed it on any type of equipment, anytime, anywhere, which was greatly appreciated.

Jeff also gave a lot back to the industry. He was on the HVAC advisory board of Cumberland Perry Technical school for a long time and active in RSES. By active, he taught classes, proctored EPA certification exams and was elected president. He was always willing to share his knowledge with new or less experienced Technicians.

Jeff’s impact on CSE will be felt for many years and we hope to continue to see him at the holiday parties, golf outings, some CSE moving forwards meetings and even some pop-ins at the office.

Thanks again, Jeff! Enjoy your well-earned retirement!

Address

1717 William Penn Highway
Mifflintown, PA
17059

Opening Hours

Monday	7:30am - 4:30pm
Tuesday	7:30am - 4:30pm
Wednesday	7:30am - 4:30pm
Thursday	7:30am - 4:30pm
Friday	7:30am - 4:30pm

Telephone

+17174369044

Website

http://cse2222.com/cse-mifflintown/

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