Issler GmbH

Project management and quality of work

We had our 30 year old gas burner replaced in the spring of 2022.

We were completely convinced by Issler's offer for the installation of a SolvisBen including solar collectors and we do not regret this decision at all.

Advice, planning, communication, installation and help with the subsidy application - everything TOP. The system works great and we have already achieved significant savings in consumption.

The completion of work (insulation, sealing wall breakthroughs) by contracted third-party companies unfortunately turned out to be a bit tough and required more commitment from our side than should actually be necessary, but in the end everything was done and we could not be more satisfied.

After we had our oil heating replaced by a heat pump last year - competent, detailed advice by Mr. Burkart, very clean execution by Mr. Mehlin and colleagues - we were so satisfied with ISSLER that we decided in the spring to also have our comprehensive bathroom renovation carried out by ISSLER.
We were NOT disappointed, on the contrary! Now we have a super great bathroom!!!
Planning by Mr. Buck and execution by Mr. Heisenberger, everything in the best way! All craftsmen involved worked cleanly and competently, the deadlines were met exactly. Many thanks for that.
Also the pleasant contact is worth mentioning.
We can only recommend you!

The company Issler has completely renovated our small bathroom and were competent, clean, reliable and always responsive from the beginning. Small still existing defects are processed. Through the renovation we have gained more space ! Thank you !!! Any time again !!!

Heike and Andreas

Very competent execution, despite partly in advance by external planners executed defective planning. These planning errors and uncertainties has Issler and especially their installer Mr. Heisenberg unerring and professionally super as well as possible remedied and delivered a very good end result!
For me a lesson: Sanitary and heating installation not by external specialist planners and then tender, but go directly to the craftsman! Even if then no offers between craftsmen can be compared, the planning is nevertheless more practically oriented and at the end under the line surely more favorably!
At Fa. Issler I had the impression that a competent planning would have been in the best hands, because they have as mentioned existing errors obligingly corrected!

We had our shower replaced with a steam bath. From the consultation to the execution, we are very satisfied. Many thanks to the team of the company Issler!

very helpful and competent staff especially the warehouse staff

Shower renovation: super satisfied, good advice, great products, punctual and clean work.

Great team, very good customer service, good internal organization

Mr. Rieger has already been with us a few times, we were very satisfied with his services.
We would be very happy if Mr. Rieger would continue to be available to us.

We intended to replace our old oil heating system with a Solvis solar system with Luna evacuated tube collectors and gas burner and quickly received an on-site appointment from Mr. Brunner. The offer also came very quickly. After we had decided in favor of Issler, we were able to apply for the subsidy together with Mr. Brunner. The offer was valid until the funding approval. On 02.11.2020, after Mr. Burkart went through everything with us again on site due to Mr. Brunner's inability to attend, the order was placed and execution began on 23.11.2020. Already on 26.11. the heating went back into operation. Mr. Mehlin and Mr. Werner with a trainee carried out the work very cleanly and conscientiously. After only 5 days everything was ready. Mr. Brunner was present on the construction site once a day.
We were very satisfied with the friendliness and the execution and can recommend Issler with a clear conscience.

The heating change was fast, clean, competent and not overpriced. The employees are friendly and work precisely. Issler also took over the coordination for chimney sweep and electrician and the application for government grants at BAFA. The Solvis heating system is easy to retrofit or add solar and photovoltaic at any time. During construction we were supplied with heat and hot water by separate heating generators. Many thanks to all.

It's just fun to work with you, the whole package just fits.
Looking forward to more projects together.

We purchased a Solvis heating system from Issler. From the consultation, to support, to the installation, everything went great. It was important that the planned system meets our current and future needs. Planned time frames were adhered to and the old system including peripherals was disposed of.

The work lasted a week and the mechanics present worked very cleanly and were also available for questions. The comprehensive briefing on the new equipment was very pleasant. Our wishes regarding the settings were always implemented and explained. Even for subsequent questions, they still had an open ear.

It was particularly pleasant that we did not have to worry about anything. All service providers such as electricians, energy suppliers and insulators were coordinated and commissioned by Issler.

On a positive note, enough time was always scheduled for discussions and all concerns could be clarified without time pressure.

The whole thing happened two months ago and we are still satisfied. Based on this experience, I can only recommend Issler in the area of heating construction.

Excellent execution by Mr. Obermonteur Mehlin with the help of his very motivated and precise working trainee.
Appreciative and friendly way of dealing with the trainee, very polite and careful behavior with us as customers. Tip-top in terms of punctuality and cleanliness, as well as expertise, advice and support from the entire Issler team.
We did not have to do without hot water and heating during the installation: Issler provided us with a mobile hot water system and fan heater to tide us over.
Advice and help in applying for state subsidies was part of the excellently organized overall package. Wellness package for wellness heating, showering and living!
Thank you!!!

Excellent, transparent advice, planning and timely installation. Pleasant cooperation during the week-long work.

Our old heater suddenly went out in October. A solution had to be found quickly, as we were approaching the cold season. Since we have been customers of Issler for many years, we asked them about it. We were very satisfied with the quick feedback on planning, offer and implementation. Mr. Brunner, our contact person, was a great help in the decisions and also with other questions. The nice team of fitters installed everything competently and left the "construction site" totally clean. Keep it up!
Fam. Fischer-Zeh

We were very satisfied with the planning and execution of the heating installation, well organized, timely and expeditiously implemented. The installers were very concerned about cleanliness during their work to minimize the impact on daily life in the house. The advice on the various funding options (BaFa, etc.) was also very good, everything worked as planned. Many thanks again to Mr. Burkart, Mr. Brunner and the installation team of Issler.
Fam. J.-C. Baumann, Steinen-Höllstein

Dedicated staff, reliable.good advice,

The invoice is repeatedly issued as a total amount, i.e. the individual services, in particular the hourly rate for the fitter and the individual costs of the numerous spare parts, are initially NOT comprehensible. Provided then - on explicit desire - nevertheless a listing of the individual invoice positions took place, one must determine if necessary that one for simple sanitary work a "proud" mechanic hourly rate (inclusive VAT) of nearly 90, - € !!!!! set and initially for the individual parts the multiple of the competition (Bauhaus prices; inclusive VAT) amounted to. The Issler range was from > 320 % to > 540 % of these comparison prices !!!! After written intervention about these horrendous prices, the amounts were generously reduced to > 210 % to > 360 % of the competition. Such a "billing practice" I have not experienced in the past 30 years from any other craft business. In my opinion, this is out of the question.